Robert Downey Jr. was giving out tickets to the gun show as he showed off some of his martial arts skills on a break from filming Due Date in LA. We'll be seeing more of Robert's rippling muscles when he shows off his moves in Sherlock Holmes out on Christmas. This week we got a better look at one of his other anticipated upcoming projects, Iron Man 2, though in that one RDJ spends the majority of his time suited up in one way or another.

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