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Worst: The voters
The only show where Matt Damon, Russell Crowe, Nic Cage and Robert Downey, Jr. can lose an award to...Channing Tatum. Not only did Tatum win Choice Action Adventure star, but he did it for a role where he gave arguably the worst performance in the entire film - "G.I. Joe: The Rise of Cobra." We're guessing that he really won for "Dear John" (a role he was nominated for in Choice Dramatic Actor and lost) and the voters didn't realize that was a different category. Or, at least that's what we're hoping happened.