Haven't seen blood diamond. He was the best performance of an all-star cast in the departed. The year before he was amazing in The Aviator.
Say what you want....He's reaching a level in my eyes where you know a movie will be good because he's in it and he picked the script.
Tom Hanks I think is another person who grew into that...
Sure there are a few flops along the way; but i'll take my chances on a Leo film
