Just Jared has posted a photo from the set of Ben Stiller's next directorial effort Tropic Thunder. It reveals Tom Cruise in his secret cameo. Here is the photo:

Ben Stiller says Tropic Thunder is a "a comedy about five actors who go on location and find themselves relying on their boot camp experiences when they get stuck in a real war-like situation."

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The film opens July 11th, 2008.