Tropic Thunder is an upcoming action comedy starring Ben Stiller, Robert Downey Jr., and Jack Black.

Wikipedia Article

Official Website (Includes Trailer)

If you can watch the trailer without laughing at Robert Downey Jr.'s incredibly hilarious performance, then you have the most terrible sense of humor.

Here are a couple pictures too (From comingsoon.net):
http://www.comingsoon.net/gallery/18848/Tropic_Thunder_1.jpg
http://www.comingsoon.net/gallery/18848/Tropic_Thunder_3.jpg

Awright, that looks goddamn funny.

Robert Downey Jr looks AWESOME. That and Jackson look like they'll be the best part of the movie. Ben Stiller just looks like his same old annoying, I'm trying to be funny self, and will end up annoying the shit out of me as always.