Bradley Cooper has never shied away from physical roles. It wasn’t too long ago that an unemployed Cooper pranced around his backyard in bike shorts, filming himself kicking trash cans in an attempt to land the role of an MMA fighter. He didn’t get the part, but Cooper eventually got his shot in 2010’s "The A-Team." To look the part of an ex–special forces soldier, Cooper went through a grueling six-month transformation, the results of which were so stark that even he had trouble recognizing his body in some fight scenes. He’s since become an A-list MVP, and don’t worry: Hangover Part III is definitely in our future.