It's a little bit off topic but I just "discovered" the bd-life extra things on my Tropic Thunder bluray (I never bothered to check bd life content before, stupid...) and watched this ~11 minute long clip about him improvising at the camp fire scene, and it just seriously blew my mind. So amazing!
Sounds cool ... I loved all the footage that wasn't used thats on the Tropic Thunder DVD .... The "mock - umentary" that is a take off on Francis Ford Coppola's wife's documentary about the making of Apocolypse Now. I wondered how they could decide to edit out such funny scenes. It must be difficult to leave things out.