Ben Stiller's back to bring the funny. This shows he's got it all on fronts: writer, director and actor. It helps that his 'back up' are on career best form, from a drug-addicted Jack Black to Tom Cruise's cameo as a fat, bald producer. Robert Downey Jr steals the show, though, playing gruff, black soldier Sgt Osiris. We really, really hope he gets his own spin-off film.

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