Spontaneous Human Combustion:
Spontaneous Human Combustion (SHC) is a rare enigmatic phenomenon that occurs when the human body ignites from within itself for no apparent reason.  Hundreds of cases of SHC have been reported and documented over the past few hundred years and many are eye witness accounts.  For additional information regarding spontaneous human combustion please visit:
Crystal Links.com: Spontaneous Human Combustion
Alternative Science.com: Burning Issue - Spontaneous Human Combustion
Time Travel:
Time travel is a form of teleportation.  Many people claim to have temporarily traveled back or forward in time.  Alleged spontaneous involuntary time travel is also known a time slip.  It has been theorized that time slips occur when lingering energy from a traumatic event (past or future) creates a portal to the actual event.  A person who happens to be at the right place at the right time can inadvertently enter it.  It has also been theorized that some people are more susceptible to time slips.  For additional information regarding time travel and teleportation please visit:
Unexplained-Mysteries.com: Time Slips
About.com: Traveling Madly Through Time
About.com: Time Travelers
Scifipedia: Teleportation
Wikipedia: Teleportation

Miracles:
Miracles are extraordinary events brought about by divine intervention to benefit people.  They are affirmations of faith that defy the laws of nature and often answer prayers.  Most miracles involve seemingly impossible occurrences.  They often include the appearance of religious icons in unlikely places, statues that exhibit lifelike characteristics, and the curing of the terminally
ill.  For additional information regarding miracles, please visit:
Probe Ministries: Miracles - What Are They?
Science and Miracles
The Miracles Page
Synchronicity:
Many people believe that coincidences happen for a specific reason.  As a result, profound coincidences are frequently interpreted as omens.  The famous psychologist and philosopher Carl Jung coined the term synchronicity to convey this belief as well as his belief that coincidences connect mind with matter.  Synchronicity occurrences can also be manifested through intuition and insight.
For additional information regarding synchronicity please visit:
What is Synchronicity?
Wikipedia.com: Synchronicity
The Skeptic's Dictionary: Carl Jung (1875-1961), Synchronicity & the Collective Unconscious

Meaningful coincidences can also span time as is exemplified by the Lincoln-Kennedy connection.  For additional information regarding the Lincoln-Kennedy connection please visit:
Similarities Between the Assassinations of Kennedy and Lincoln
Synchronicity: Lincoln-Kennedy
Spontaneous Human Involuntary Invisibility:
Spontaneous human involuntary invisibility (SHII) is, surprisingly, a relatively common occurrence which has been reported since ancient times.  It is a frustrating and sometimes frightening phenomenon in which the subject suddenly finds themselves being ignored in public places because they can not be seen or heard by anyone but themselves.  The phenomenon can occur anywhere, however.  For additional information regarding spontaneous human combustion please visit:
The Research and Writings of Donna Higbee
Crystalinks.com: Spontaneous Human Involuntary Invisibility
About.com: Spontaneous Human Invisibility
Other Realms:
Many people believe that other dimensions and parallel universes coexist with our own and that numerous vortexes (portals) leading to them exist all over the world.  Psychics theorize that areas of intense paranormal activity such as UFO hot spots and haunted places serve as vortexes.  Famous vortexes in the Unites States include:
For additional information regarding other realms please visit:
National Association For Scientific and Cultural Appreciation: String Theory
Mystical Blaze:Other Dimensions
NOVA: The Elegant Universe
Reincarnation:
Reincarnation is the rebirth of a soul into another body after death.  It is an accepted belief in many religions including Hinduism, whose rules of Karma state that a person's actions will influence their future life. Manifestations of reincarnation include  memories of the past life, unexplainable knowledge of an earlier era or past civilization, and detailed knowledge of a language which is foreign and unfamiliar to the subject.  For additional information regarding reincarnation, please visit:
The Reincarnation FAQ
Wikipedia.com: Reincarnation
Reincarnation: Its Meanings and Consequences
The Mystica.com: Reincarnation
The Skeptic's Dictionary: Reincarnation
Stigmata:
Stigmata is the spontaneous appearance of temporary bleeding wounds mimicking those suffered during the crucifixion of Christ.  Although well documented, researchers of this enigma disagree as to whether or not it is supernatural or psychosomatic.  For additional information regarding stigmata please visit:
Crystalinks.com: Stigmata
The Skeptic's Dictionary: Stigmata
New Advent.org: Mystical Stigmata
Materialization:
Anomalous materialization is a form of teleportation and is the physical manifestation of matter from nothing.  Objects that materialize are called apports.  Materialization is controversial because many fraudulent cases have been proven, usually during seances.  For additional information regarding materialization, please visit:
Wikipedia: Materialization
Occultopedia: Materialization
Scifipedia: Teleportation
Wikipedia: Teleportation
Numerology:
Numerology is the interpretation of the relationship and effects that numbers seem to have upon people and their day-to-day reality.  Numerologists believe in lucky and unlucky numbers and that everything has a numerical translation.  Numerology has nothing to do with mathematics.  For additional information regarding numerology please visit:
Wikipedia: Numerology
Do-It-Yourself Numerology
Professional Numerology
Sorcery:
Also known as witchcraft or black magic, sorcery utilizes prayers, spells, and curses in attempts to influence future events.  Sorcery was first used by ancient civilizations as a means of ensuring productive harvests.  It quickly became a means of attempting to influence fate.   Although every civilization has developed its own forms of sorcery, many frown upon its use and ridicule it.  For additional information regarding sorcery please visit:
Occultopedia: Sorcery
Wikipedia.com: Magic (Paranormal)
Religious Tolerance.org: Wicca
Spells and Magic.com

In 17th Century America, accused witches were put to death during the infamous Salem Witch Trials.
For additional information regarding The Salem Witch Trials please visit:
Famous American Trials: The Salem Witch Trials
Salem Witch Trials Documentary Archive
Salemweb.com: The Salem Witch Trials of 1692
Missing Time:
Cases of missing time date back thousands of years. The term refers to brief or lengthy periods which are unaccounted for as the result of unknown circumstances.  Missing time is usually associated with alleged UFO abductees who suffered amnesia as a result of their experience and who later recalled the traumatic events.  Missing time is frequently accounted for during hypnosis.  For
additional information regarding missing time, please visit:
UFO Evidence Bookstore: Missing Time by Budd Hopkins
Mystery Spots:
Also called gravity hills, mystery spots are places where the laws of physics do not seem to apply due to converging electromagnetic fields.  Cars and balls roll uphill, objects stand on-end at bizarre angles, and people and objects appear larger or smaller in relation to each other depending on their location within the area:  Although many genuine mystery spots exist worldwide, many have been exposed as hoaxes or optical illusions.  For additional information regarding mystery spots please visit:
About.com: Mystery Spots and Gravity Hills
Gravity Hills
Oregon Vortex.com
The most famous miracles of the modern era occurred in Lourdes, France and Fatima, Portugal.  For additional information please visit:
Miracles of Lourdes
Lourdes-France.org
The Miracle at Fatima
About.com: The Fatima Prophecies
Levitation:
Levitation is the enigmatic suspension of an object or objects in mid-air by supernatural forces.  Levitation frequently occurs during seances. For additional information regarding levitation, please visit:
The Mystica: Levitation
Wikipedia: Metaphysical Levitation
Luck:
Luck is the perception of good or bad fortune.  It is enigmatic because certain
people seem to attract good luck while others seem to attract bad luck.
Amulets:  Also known as a talisman or good luck charms, amulets are objects which supposedly bring protection and good fortune to their owners.
For additional information please visit:
Wikipedia: Amulet
Jinxes:  Jinxes are streaks of misfortune associated with people or objects and
usually last for long periods of time.  Famous jinxes seem to surround:
For additional information please visit:
Wikipedia: Jinx
For additional information regarding luck, please visit:
Wikipedia.com: Luck
The Placebo Effect:  Placebos are inert substances or treatments which are administered to unwitting patients as part of a controlled experiment.  While placebos have no curative properties, many patients exhibit a placebo effect where they exhibit dramatic improvements after taking them.  It is theorized that the improvements occur because the patients expect the medication to be effective.
For additional information please visit:
The Skeptic's Dictionary: The Placebo Effect
US Food and Drug Administration: The healing Power of Placebos
Placebo Effects Prove the Value of Suggestion
Spontaneous Remission:  Usually associated with cancer patients, spontaneous remission refers to the sudden halting of the spread of a chronic disease or medical condition for no apparent reason.  For additional information please visit:
Spontaneous Remission of Cancer
Spontaneous Remissions Under Holistic Cancer Treatment
Medical Enigmas:
Mainstream scientists have begun to recognize many medical practices such as acupuncture, and the placebo effect for their healing effects.  Others, such as faith healing, have been
rejected outright, although there have been many successful instances.
Acupuncture:  Acupuncturists place needles at strategic locations throughout the human body to treat physical ailments and disease.  Also known as acupressure, Acupuncture originated in China thousands of years ago and is highly effective   It is widely believed that the technique redirects energy flow to affected areas of the mind and body.  For additional information please visit:
Acupuncture.com
Let Us reason.com: Acupuncture
Faith Healing:  Also known as 'the laying on of hands", faith healers use spiritual energy to treat diseases and ailments.  Spiritual energy is transferred from the healer's body to the subject's body through the sense of touch.  Many evangelical faith healers have been exposed as frauds or hoaxers and, as a result, it is one of the most controversial medical enigmas.  For additional information please visit:
Wikipedia: Faith Healing
The Free Dictionary.com: Faith Healing
The Coral Castle:  Homestead Florida's Coral Castle is an architectural enigma.  Completed in 1940, it was constructed from over 1100 tons of carved coral over a 28 year period by an eccentric and reclusive Latvian immigrant named Ed Leedskalnin, allegedly without any assistance from other people or heavy machinery.  Leedskalnin claimed to have used the same techniques developed by the ancient Egyptians to construct the Pyramids.  Like India's Taj Mahal, the Coral Castle was built as a monument to a lost love.  Ironically, it is one of the few structures to have survived fully intact following the devastation of Hurricane Andrew in 1992.  For additional information please visit:
Coral Castle.com
Mysteries of the Coral Castle
Coral Castle: A Geomantic Wonder
About.com: The Secrets of Coral Castle
Modern Mysteries:
Area 51:  Also known as Groom Lake and Dreamland, Area 51 is part of a highly secretive US military base located near Las Vegas, Nevada.  It is rumored to be the testing area of highly classified military and alien aircraft.  It is also rumored to house highly hazardous materials.  For additional information please visit:
Above Top Secret.com: Area 51 Installation
Aliens on Earth: Area 51
Federation of American Scientists - Overhead: Groom Lake
The Skeptic's Dictionary: Area 51
The Assassination of President John F. Kennedy:  Debate continues regarding whether JFK was the victim of a group of conspirators or a lone gunman.  Evidence supports the conspiracy theory, but there are too many missing pieces of the puzzle.  For additional information please visit:
The Kennedy Assassination by John McAdams
JFK Assassination Web Page
The National Archives: JFK Assassination Records
The Bermuda Triangle:  The Bermuda Triangle encompasses approximately 1,500,000 square miles of the Atlantic Ocean between Bermuda, Miami, and San Juan.  It is the most famous hot spot for the disappearance of sea going vessels and aircraft, hundreds of which have been documented since the early 19th Century.   Rumored anomalous occurrences in the Bermuda Triangle date back to the expeditions of Christopher Columbus.  Its most famous disappearances include the Cyclops in 1918 (with a crew of over 300), all five aircraft of Flight 19 in 1945 (which included 5 military planes and 14 crewmen), and a rescue plane (with 13 crewmen aboard) which was immediately dispatched to locate Flight 19.   Anomalous occurrences which have been reported within the Bermuda Triangle include spinning compasses, electromagnetic interference, and strange fog.  Current theories posed to explain the enigma include discharges of methane gas bubbles from the sea floor which may greatly reduce the buoyancy of the water.  Other theories suggest interdimensional portals, UFOs, and time travel.  For additional information please visit:
Bermuda Triangle Database
Bermuda Triangle.org
Parascope.com: Bermuda Shorts: A Brief History of the Devil's Triangle
BStar.net: The Bermuda Triangle
EduGreen.com: The Bermuda Triangle Mystery
Department of the Navy: Naval Historical center - The Loss of Flight 19
Bible Codes:  Bible Codes are coded messages hidden within the text of the Old Testament.  Coded words consist of letters that are equally spaced either forward, backward, vertically, horizontally, or diagonally.  Ironically, it is relatively easy to find codes relating to past and current events but practically impossible to locate codes relating to future events.  Skeptics argue that similar codes are found in all books.   The fact that this is true makes the  phenomenon even more intriguing because Bible Code messages are the most profound.  New Bible codes are discovered every day.  For additional information please visit:
Bible Code Digest.com
Wikipedia.com: Bible Code
Committee for the Scientific Investigation of Claims of the Paranormal
The Black Dahlia Murder:  The Black Dahlia was an aspiring actress named Elizabeth Short who's brutal 1947 murder and dismemberment is one of Hollywood's greatest mysteries.  For additional information please visit:
Who Killed the Black Dahlia?
Court TV's Crime Library: The Black Dahlia - The Elizabeth Short Murder
The Black Dahlia Solution
Cattle Mutilations: The anomalous mutilation of cattle and livestock has plagued the Western hemisphere for decades.  A few of the incidents have been linked to religious sects but the majority go unsolved.  Most cases occur in tandem with other paranormal phenomenon, most notably UFO activity.   Common characteristics of cattle mutilations is a lack of blood, laser-like precision of tissue and organ removal, and an aversion to carcases by scavengers.  In rare cases, witnesses have reported the levitation of an animal prior to its mutilation.  For additional information please visit:
About.com: Cattle Mutilations - A World-Wide Problem
About.com: Animal Mutilations - A Phenomena
Crystal Links.com: Cattle Mutilations
Crop Circles:  Crop Circles are large geometric patterns that usually appear overnight in farm fields and in large grassy areas.  However, many elaborate patterns have reportedly been created within minutes, or even seconds, during daylight.  Crop circles usually form in areas which experience UFO phenomenon and many people believe that they are created by UFOs.  The formations are created when vegetation is flattened.  While most are unexplainable, several people have admitted to creating many of them.  Ironically, the most complex crop circle formations are the most enigmatic.  The worldwide phenomenon has occurred for hundreds of years but gained notoriety in Great Britain during the 1980s.   Newer geometric designs have become much larger and  more complex over the years as the phenomenon evolves.  Early examples, which seemed complex when they were created, now pale in comparison to current ones.  For additional information please visit:
Crop Circle Research.com
The Crop Circular
Crop Circle Connector
The Death of Marilyn Monroe:  The death of Marilyn Monroe is Hollywood's greatest mystery.  Debate rages as to whether her 1962 drug overdose was a murder or a suicide.  Proponents of the murder theory note her romantic ties to both President John F. Kennedy and his brother Robert Kennedy.   Supporters of the suicide theory note her severe depression and bizarre behavior.  For additional information please visit:
Coverups.com: Marilyn Monroe's Death
Wikipedia: Marilyn Monroe
Electronic Voice Phenomena (EVP):  EVP occurs when unexplainable voices and/or sounds are recorded electronically or transmitted electronically via radio, television. telephone, or modem.  Many EVP voices and sounds sounds are not decipherable and many EVP voices can only be understood when played backwards.  Many parapsychologists believe that EVP is the most effective means for communication with spirits.  For additional information please visit:
About.com: What You Need to Know About...Electronic Voice Phenomena
Prairie Ghosts.com: Electronic Voice Phenomena
The Hutchison Effect:  The Hutchison Effect is a variety of anomalous phenomena which include large scale levitation, heating, fusing, and/or separation of materials caused by relatively small amounts of anomalous radio wave interference.  For additional information please visit:
American Anti-gravity: The Hutchison Effect
The Hutchison Effect: An Explanation
Jack the Ripper:  The case of Jack the Ripper is history's greatest unloved murder mystery.  Jack the Ripper was a knife wielding serial killer who stalked prostitutes in London's East End during 1888.  Suspects included a woman, a medical doctor, and a member of the British Royal family.  For additional information please visit:
Casebook: Jack the Ripper
Kirlean Photography:  Kirlean Photography is the photography of auras (the life force of living creatures).  Kirlian photographs resemble coronal discharges and are produced by exposing photographic plates to high voltage electrical fields.  Evidence shows that different shapes, colors, and brightness of photographed auras reflect the health and state of mind of the subject.  For additional information please visit:
The Mystica.com: Kirlean Photography
Encyclopedia of Skepticism and the Paranormal: Kirlian Photography
The Lost Colony of Roanoke:  The Roanoke Colony was established in 1585 on Roanoke Island, off the coast of what would become North Carolina.  It was England's first North American colony but in1587 all 90 of the remaining colonists vanished without a trace.  The only clue to their demise was the word "Croatoan" which was carved into a piece of wood used as a post and which apparently referred to a neighboring island.  One theory suggests that the colonists were killed during an Indian attack.  Another suggests that they were captured by the Indians and interbred with them.  A third supposes that they relocated to the Chesapeake Bay area where they had originally intended to settle.  For additional information please visit:
Coastal Guide.com - The Lost Colony:Roanoke Island, NC
Pagewise: What Happened To the Lost Colony of Roanoke?
The Lost Dutchman Gold Mine:  The Lost Dutchman Gold Mine is located somewhere within the Superstition Mountains of Arizona.  Its first owner/operators were supposedly killed by Apache Indians in 1848 and it's location was forgotten.  It was supposedly rediscovered during the 1870s by a German immigrant, for whom it is named.  Following his death, it's location was forgotten again.  Rumors have persisted ever since regarding large deposits of gold still remaining within it as well as plunder taken from it and hidden in the surrounding area.  Adding to the lore of the legend is the strangeness of the Superstition Mountains and mysterious occurrences that are common there.  For additional information please visit:
Arizona State Parks: Legend of he Lost Dutchman Mine
Desert USA.com: New Evidence Surfaces About the Location of The Lost Dutchman Mine
Ghosts of the Prairie: The Lost Dutchman Mine
The Money Pit of Oak Island:  Oak Island is located off the coast of Nova Scotia, Canada.  What lies at the bottom of its infamous Money Pit has become one of history's greatest enigmas.  Since the booby trapped pit was discovered over 200 years ago, all attempts to reach its bottom have failed, and many have been deadly.  Rumors that the pit contains pirate treasure, crown jewels, or the Holy Grail fuels the quest.  For additional information please visit:
The Active Mind: The Mysterious and Unexplained - What Lies at the Bottom of the Money Pit
Mysteries of Canada: The Treasure Pit of Oak Island
The Philadelphia Experiment:  During 1943 the US Navy allegedly performed a force field experiment called Project Rainbow  which rendered one of its ships (the USS Eldridge) and its crew invisible to radar and the naked eye.while instantly teleporting them from Philadelphia, Pennsylvania to Norfolk, Virginia.  While invisibility and teleportation were successful, the experiment's effects on crew members were catastrophic.  While many went insane, others became partially invisible or became fused with the decks and walls of the ship.  Many crew members were instantly incinerated while many died later on.  The US Navy contends that rumors of the experiment originated as a result of the installation of degaussing equipment which can make ships less magnetically susceptible to mine fields.  For additional information please visit:
The Montauk Project: The Philadelphia Experiment
Department of the Navy - Naval Historical Center: The Philadelphia Experiment
The Philadelphia Experiment From A to Z
The Philadelphia Experiment: What They Didn't Want You To Know
The Roswell Incident:  The Roswell Incident is the most controversial UFO incident on record.  It occurred in July 1947, just days after the term "flying saucer" was coined by Kenneth Arnold (during his own unrelated UFO incident near Mt. Rainier, Washington).  The Roswell incident has inspired countless books, movies, and television shows and has become the epitome of government cover-ups.  The events of the Roswell incident began following the alleged crash and recovery of a UFO, as well as its dead and surviving occupants, on a ranch near Roswell, New Mexico.  The case is most notable due to the exceptional number of credible witnesses, including military personnel.  For additional information please visit:
CUFOS: The Roswell Incident
Report of Air Force Research Regarding the "Roswell Incident" July 1994
UFO Museum and Research Center - Roswell, New Mexico: Roswell Incident
Skyfish:  Also called flying rods, skyfish are enigmatic anomalies that appear only on videotape or film.  First discovered in 1994, they appear to be minute insect like creatures whose rapid movements can't be seen by the naked eye.  For additional information please visit:
About.com: Skyfish and Solar Entities
The Tunguska Incident:  In June of 1908 an object from space exploded in the Tunguska region of Siberia, leveling everything for hundreds of thousands of square miles.  Witnesses to the event included passengers aboard a trans-Siberian railroad and local nomadic residents of the vastly secluded region.  Although scientists believe that the object was either a small comet or asteroid, many witnesses stated that the object was cylindrical and that it  made several 45 degree changes in course before exploding about 5 miles above the Earth.  In the days following the explosion, residents and animals in the area began to show signs of radiation sickness.  For additional information please visit:
The Tunguska Explosion
Aliens 111: Tunguska 1908 - Siberia Crash
The Truth of Tunguska: A Downed Alien Spacecraft?
For additional information regarding modern mysteries please visit:
The Truth be Known.com: Mysteries of the World
Unsolved Mysteries.net
Unsolved Mysteries.com
Unexplained America
Strange Sounds:
The Ringing Rocks of Pennsylvania:  When struck, many of the rocks in southeastern Pennsylvania's Ringing Rocks Park produce tones.  The phenomenon is enigmatic because, while all of the rocks in the area are composed of identical materials, only certain rocks produce tones.  For additional information regarding strange sounds please visit:
Unexplained earth: Ringing Rocks of Pennsylvania
Weird Geology: Ringing Rocks
Skyquakes:  Anomalous sonic-boom-like explosions called skyquakes have been reported for hundreds of years all over the globe.  For additional information regarding strange sounds please visit:
Skyquake Reports
Tangled Forest.com: Mount Tom
Fortune Telling:  Fortune telling is a form of divination which utilizes psychic abilities, palm readings, astrology, tarot cards, crystal balls, and tea leaves.  For additional information please visit:
Wikipedia: Fortune Telling
Fortune Telling and Astrology
Prophecy:
Prophecy is the calculation of future events and has been practiced throughout human
history.  it has existed in various forms which include:
Omens:  Omens are signs of good and bad future events and their interpretation is considered a form of divination.  Unlike oracles, they are occur randomly and can appear anytime, anyplace.  Anomalies (strange events) are often considered bad omens and predictors of disasters.  For additional information please visit:
Wikipedia: Omens
Paralumin.com: Omens
Oracles:  Oracles are vessels of divination and are portents to future events.  They can be people (such as prophets or fortune tellers), objects (such as crystal balls), or substances (such as water).  Unlike omens, they offer interpretations of information regarding specific events.  In ancient times oracles were located in temples.  In modern times they can be located anywhere.  For additional information please visit:
Wikipedia: Oracles
The Skeptic's Dictionary: Oracles
Real magic.com: Popular Oracles and Omens
Visions:  Visions are profound glimpses of future events and their ramifications.  They are often religious in nature and can occur randomly through inspiration or in dreams.  They often contain symbolism and hidden messages.  For additional information please visit:
Wikipedia.com: Vision (Religion)
NCCG.org: Visions
Nostradamus is the most respected non-Biblical prophet who ever lived and has been credited with predicting many of history's most important world events.  For information regarding Nostradamus please visit:
Nostradamus.org
Life and Prophesies of Nostradamus
For additional information regarding prophecy please visit:
Bible Prophecy.com: Prophecy Central
New Age Directory.com: Prophecy and Prediction
The Taos Hum:  Many residents Taos, New Mexico have been experiencing the ill effects of unpleasant low pitched humming sensations since the early1990s.  Taos is not unique to the phenomena, however, as similar hums have been reported worldwide.  Theories range from grinding fault lines to operations at the Los Alamos National Laboratory.  For additional information regarding strange sounds, please visit:
Taos Hum Home Page
Science Frontiers.com: The Taos Hum
Subversive Element.com: The Taos Hum
The Elusive Hum in Taos, Mew Mexico
For additional information regarding strange sounds please visit:
About.com: Unexplained Sounds
Unidentified Flying Objects (UFOs):
UFOs are probably the most enigmatic phenomenon and have existed since the dawn of Mankind.  UFOs seem to stay several steps ahead of Mankind's attempts to solve their mystery.  The modern era of UFOlogy began on June 24th, 1947 when a businessman named Kenneth Arnold coined the term "flying saucer" after spotting several airborne saucer shaped objects while flyinf near Mt. Rainier in Washington State.  UFO sightings occur anytime, anywhere and frequently occur in waves lasting days, weeks, months, or years in the same location (hot spot).
UFO lore:  UFO lore includes tales of ancient astronauts, UFO crashes, secret UFO technology installations, government cover-ups, alien interaction, alien abduction, missing time, men-in-black visitations, strange black helicopters, surgical procedures, hybrid breeding, cattle mutilations, space & time travel, and end-of-the-world warnings.
Famous UFO cases: The most famous UFO case is The Roswell Incident of July 1947.  It involved the alleged crash and recovery of a UFO (and its occupants) as well as a government cover-up which followed.  Other famous UFO incidents include (chronologically):
For additional information regarding UFOs please visit:
The Disclosure Project
About.com: UFOs/Aliens Timeline
UFO Casebook
The National UFO Reporting Center
CUFOS: The Center For UFO Studies
MUFON: The Mutual UFO Network
FUFOR: Fund For UFO Research