Look back at the long and storied career of disgraced American cyclist Lance Armstrong.
A triathlon champion by age 16, Lance Armstrong burst onto the cycling scene in 1992, when he joined the Motorola professional cycling team and won the World Championship in 1993. He scored a number of victories in Europe during the early 1990s, including the stage to Limoges in the Tour de France.
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."