Character He's Playing: Billy Costigan
Best Line: "I'm nawt a cawp!"
Worst Line: "He was a cahpet layah at Jordan Mahsh."
Boston Guy's Assessment: Leo did a great job with the accent, minus some occasional excessiveness.

Are you surprised that Leonardo DiCaprio did something good in a movie? Do you think Matt Damon is sad that Leo is more Boston that he is? I bet that's why he did another Jason Bourne movie.