Robert Downey Jr.
He had the worst '80s fashion sense, he's gotten so high he broke into a neighbor's house and fell asleep in a stranger's bed and he used to star in Ally McBeal. Pushover, right? Wrong. Today's Tony Stark is so well-versed in Wing Chun that he left his stuntmen bloodied and battered while working on the set of Sherlock Holmes. You'd be making a mistake to think that the 5'8" actor isn't afraid to throw hands. Just take comfort in knowing that he'd probably say something witty as he broke your nose.