Gary Oldman - Motherfucker can bring the scary. For a long time it seemed he was the choice to play certain figures in history and he would morph into them (JFK, Beethoven). Then it seemed he was just a heavy, or a villain if you will(AF1, Professional, Fifth Element). Now he is taking on lighter stuff, but still tearing it up (Batman Begins).
Julianne Moore - So many parts, so little time. The fact that she is hot is a plus. Yet she is not a starlet. She can act. She can make a character. Man, I'd love to fuck her brains out.