As "The Hangover III" hits theaters, where we're likely to see another Mike Tyson cameo, take a look at some other celebrities who have made memorable cameos on the big screen.
Mike Tyson – "The Hangover"
The following five celebrity urban legends will likely live on long into the future, despite the fact that none of them is remotely true.
You may have always wanted to put yourself in your favorite celeb's shoes, but how about his or her running shoes? Check out these celebrities who have run marathons.