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.
While the world of celebrities is filled with stories of those who lost their battles against addiction, not all celebrity addictions have an unhappy ending. Here's a look at some stars who have fought addictions and won.