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Like Robert DeNiro before him, DiCaprio found that he and Scorsese make a great team. In 2006, just two years after the release of The Aviator, they joined forces again for a very different type of project. DiCaprio starred alongside Hollywood heavyweights Jack Nicholson, Mark Wahlberg, Alec Baldwin and Matt Damon in Scorsese's shoot-'em-up remake of the Hong Kong film Infernal Affairs.
To play undercover state trooper Billy Costigan, DiCaprio spoke with a Boston accent and got familiar with an array of semiautomatic weapons. The Scorsese-DiCaprio formula won over audiences and critics. The film went on to win five Oscars®.