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