5. Matt Bomer
Matt Bomer's name is frequently brought up when talking about these comic book films, and one look at him certainly explains why. He was the frontrunner to play Superman in Man of Steel before Henry Cavill snatched the role away from him, and was one of the names tossed about when it came to casting Bruce Wayne in the upcoming sequel. He got his start in television, acting in shows like All My Children, Tru Calling, and Chuck before landing the lead role in the USA series White Collar. Since then, he's been in a few films including In Time, Superman: Unbound (in which he lends his voice to everyone's favorite Big Blue Boyscout) and Magic Mike; a role that proves he's got the physicality needed to play the quick, acrobatic Dick Grayson. The only downside is, he's 36 so his age may keep him from landing the role.