McConaughey will be replacing Owen Wilson after Wilson was hospitalized for attempted suicide.
McConaughey will be playing alongside Stiller, Jack Black, Robert Downey Jr., Nick Nolte, Bill Hader and Steve Coogan.
This comedy tells the story of five actors with great difficulties while they were shooting a movie about war. The men find themselves in a real war situation, and need to use their training to deal with the situation.
Filming for Tropic Thunder is happening at this time in Hawaii.