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"
Warner Bros. Pictures
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.
Warner Bros./DC Comics
Attendees at 2014's San Diego Comic-Con have gotten up close and personal with Ben Affleck's Batman.
As she appears in "Magic in the Moonlight," take a look back at the career of Emma Stone in photos.