lead an ensemble cast in "Tropic Thunder," an action comedy about a group of self-absorbed actors who set out. Tropic Thunder () - Robert Downey Jr. Jack Black, Ben Stiller & Robert Downey Jr In Tropic Thunder #boomchallenge #film #actors #film @KORBA ; layla<3. The trio of stars talk about about reaching the heart of darkness — and ridiculousness! — on the set of their jungle-set action comedy. Ben Stiller, Jack Black and Robert Downey Jr. Nick Nolte, Jack Black and friends during the filming of Tropic Thunder. . Jack Black, Ben Stiller, and Robert Downey Jr. Nov 1, - Ben Stiller, Robert Downey Jr. Yes, you guessed it. lead an ensemble cast in “Tropic Thunder,” an action comedy about a group of self-absorbed actors who set out. - Jack Black - Ben Stiller - Comedy - Action - LRC Watch Party: Con La Reina Creole, Retro Nerd Girl, Rrr Mmm. K ; FBA WITH DEY. Ben Stiller, Jack Black and Robert Downey Jr. Appear onstage during MTV's Total Request Live at the MTV Times Square Studios August 13, in New.