Tom Cruise's Best Tropic Thunder Scene Required One Person's Permission

"Tropic Thunder" features Tom Cruise, Hollywood's last great action star, in the surprisingly goofy role of studio exec Les Grossman. One of the best scenes in "Tropic Thunder" is in the film's closing moments, when Grossman is seen grooving and dancing to Ludacris' "Get Back" — a hilarious and fitting track to wrap up such a chaotic, action-packed film. Ludacris himself approved the use of his 2004 track after director and co-writer Ben Stiller privately screened the film for him. "Not only did he seek approval, respectfully, he invited us to watch the movie before it came out and it was literally just me, him and my management and we watched the whole movie," Ludacris told Sean Evans while appearing on "Hot Ones." 

"Just to see at the end for [Stiller] to ask me, 'Is it OK to clear this?' And I was like, 'Absolutely,'" the "Fast and Furious" star said, adding that he was thrilled to have received the opportunity to watch the film in advance as he was a fan of Stiller's work. "Tropic Thunder" went on to become box office gold in 2008, grossing over $191 million worldwide. Robert Downey Jr. also notably received a best supporting actor nod at the Oscars for starring in the comedy. 

Beyond box office glory and awards clout, "Tropic Thunder" stands out as one the most interesting films in Cruise's filmography, a rare comedic offering for the superstar who is most well-known for his action films and death-defying stunts. 

A parody of Hollywood bigwigs, Cruise's Les Grossman stands out as a sleazy, conniving, temperamental foil to the film's main roster, which includes Ben Stiller and Matthew McConaughey. To bring Grossman to life, Cruise wore a fatsuit and a bald cap, resulting in a jarring look. Known for having considerable creative input on the projects he works on, Cruise himself is responsible for Grossman's appearance in "Tropic Thunder." 

While speaking with Esquire, Stiller explained Cruise thought that a studio exec should serve as an antagonist in the film. "That part did not exist. [Cruise] said, 'Well, there's no studio executive and that would be really fun to be that guy.' And he had this whole idea of what the guy should look like," Stiller said, before adding that it was the actor's idea to have Grossman dance. "And I remember when we did a makeup test, someone handed him a Diet Coke and then he just started moving," the director added. 

The character has proven to be so popular that Cruise is expected to return as Grossman in a brand new project, though concrete details haven't materialized. While we never got to see "Tropic Thunder 2," the flick is immortalized as one of the best comedies from the 2000s — thanks in part to Cruise's wicked dance moves.