My two fave actors of all time have to be Robert de Niro and Al Pacino

I think they are brilliant!

I've liked pretty much every film I've seen with either of them in (with the exception of Charile, the one De Niro did with Dakota Fanning- not sure what he was thinking there

)
Brad Pitt is another brilliant actor, we watched Babel last night actually, not exactly a cheery film but a brilliant watch

Extremely well acted and just a crazy story about life, how one event/ act sparks another and so on. One of my fave roles that Brad Pitt plays is in 12 Monkeys he's great in that. I like brad Pitt because of the diversity of roles he plays and the same for Johny Depp. He's another good actor too, personally I think the Pirates of the Caribean films would have been nothing without him.
Gene Hackman is another goodun and I really like Juliette Lewis. I also think Leonardo Di Caprio is a good actor, he was brilliant in The Aviator and Blood Diamond.
One actor that I've never rated though is Michael Cane, I just can't take him seriously. I know a lot of people will probably disagree with me there.