Director: Ben Stiller
Screenwriter: Ben Stiller, Etan Cohen, Justin Theroux
Starring: Ben Stiller, Robert Downey Jr., Jay Baruchel, Jack Black
Plot Summary: 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." Black will play Jeff "Fats" Portnoy, an overweight gross-out comedian, who's forced to kick his drug addiction while filming on location in the jungle. Downey Jr. will play Kirk Lazarus, the greatest actor of his generation and a four-time Oscar winner. Baruchel will play Kevin Sandusky, an unknown actor on the set and Stiller plays Speedman.
Theres apparently some good cameos in this by both Tom Cruise, Tobey Maguire, and Matthew McConaghey.
BTW Robert Downey Jr. is a white guy playing a black guy in the fake movie. He's between Stiller and Jack Black.
Also available on You Tube
mod edit: that trailer link had a lot of swearing