5. The Departed (2006): Just because it's predictable list material does not mean it should go uncredited. My favorite Scorsese film to date, The Departed was brilliantly written and played, as suspenseful as it was hilarious. This film, in my eyes, an instant classic, deserves to be studied alongside Chinatown and The Godfather as one of thee most layered, even if preposterously so, crime thrillers in cinema. Why this film was important: Won Scorsese the Oscar, finally; gave a nod to Hong Kong cinema (the film was based off of Alan Mak and Wai-keung Lau's 2002 Infernal Affairs) in a huge way.