1.The Aviator - Great film and a classic performance from him.
2.The Departed
3.Body of Lies
4.Blood Diamond
5.The Beach (A lot of people hate this film but I love it)
For me, The Departed by a landslide. Also great performances in Revolutionary Road, What's Eating Gilbert Grape and The Aviator. He was murdered by DDL in Gangs of New York - a real on-screen rape
DDL gave one the greatest preformances of all time as Bill "The Butcher" Cutting in Gangs of New York and should have won the Oscar - not only the BAFTA and Screen Actors Guild Award. Leonardo DiCaprio looked so average compared to DDL in that film. Then again so would Johnny Depp, Pitt, Damon or any other actor.