I believe the song you are looking for is Name of the Game by
the Crystal Method. It is in the trailer and two versions of the
song are in the movie. Here's the complete list of songs from the
movie Tropic Thunder in the order they appeared in the movie. You
can find the videos and downloads for them here:
http://www.reelsoundtrack.com/index.php?act=movie_details&id=49424.
I Love Tha Pu**y - Brandon T. Jackson Gothic Monsters - Theodore
Shapiro The Four Seasons Spring Allegro - Capella Istropolitana Cum
On Feel the Noize - Quiet Riot Brick House - David Way U Can't
Touch This - MC Hammer Sadeness Pt. 1 - Enigma Ball of Confusion
(That's What the World is Today) - Temptations Escalation - Matt
Hirt Ready Set Go - Ben Gidsjoy The Name of the Game - Crystal
Method Run Through the Jungle - Creedence Clearwater Revival The
Pusher - Steppenwolf Sympathy for the Devil - Rolling Stones Music
from Star Trek episode Arena - Alexander Courage Movin' On Up -
Janet Dubois and Jeff Barry Sometimes When We Touch - Dan Hill Low
- Flo Rida featuring T-Pain Do Me! - Ricardo Bell, Michael Bivins,
Carl Bourelly and Ronald De Voe (Bell Biv Devoe) For What It's
Worth - Buffalo Springfield Frankenstein - Edgar Winter Group Get
Back - Ludacris The Name of the Game (The Crystal Method's Big A**
T.T. Mix) - Crystal Method Original music for Tropic Thunder -
Theodore Shapiro Extra songs on the album, not in the movie: I Just
Wanna Celebrate - Mooney Suzuki I'd Love To Change The World - 10
Years After War - Edwin Starr