"Silent Night" is first performed, the Library of Congress burns, NORAD begins tracking Santa, and man orbits the Moon for the first time, all on this day.
1524: Vasco da Gama, the Portuguese explorer who in 1498 became the first European to reach India by sea, dies of malaria in Cochin, India.
The following five celebrity urban legends will likely live on long into the future, despite the fact that none of them is remotely true.
Whatever their reasons, more than a few stars have decided to walk away from their chosen fields only to get the itch and return -- some more than once. Take a look at some celebrities who have "unretired."