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.
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It was three decades ago that pop star Prince became movie star Prince. With "Purple Rain" celebrating its 30th anniversary July 27, join us for a look at "The Purple One" other singing stars who are double threats.