Tropic Thunder

Tropic Thunder is a 2008 American satirical action comedy film cowritten, produced, directed by, and costarring Ben Stiller. The film also costars Robert Downey, Jr. and Jack Black. The main plot revolves around a group of prima donna actors who are making a fictional Vietnam War film. When their frustrated director decides to drop them in the middle of a jungle, they are forced to rely on their acting skills in order to survive the real action and danger. Written by Stiller, Justin Theroux and Etan Cohen, the film was produced by Red Hour Films and distributed by Paramount Pictures through DreamWorks Pictures.

Hookhanded Vietnam veteran Staff Sergeant John Four Leaf Taybacks memoir, Tropic Thunder, is being made into a film. With the exception of newcomer supporting actor Kevin Sandusky, the castfading action hero Tugg Speedman, fivetime Academy Awardwinning Australian method actor Kirk Lazarus, rapper Alpa Chino, and drugaddicted comedian Jeff Portnoybehave unreasonably. Rookie director Damien Cockburn cannot control them during filming of a large war scene, and production is reported to be one month behind schedule a mere week into production. Studio executive Les Grossman orders Cockburn to resume filming as planned, or risk its cancellation.Acting on Four Leafs advice, Cockburn drops the actors into the middle of the jungle, with hidden cameras and rigged special effects explosions to film guerrillastyle. The actors have guns that fire blanks, along with a map and scene listing that will lead to a helicopter waiting at the end of the route. Unknown to the actors and production, the group have been dropped in the middle of the Golden Triangle, the home of the heroinproducing Flaming Dragon gang. Just as the group are about to set off, Cockburn inadvertently steps on an old landmine and is blown up, stunning the actors. Speedman, believing Cockburn faked his death, persuades the others that Cockburn is alive and that they are still shooting the film. Lazarus is unconvinced but joins them in their trek through the jungle. ........

Source: Wikipedia