Honestly, Nicholas Cage. I know people like to make fun of him and even go as far as to praise him religiously in a mocking satirical sense, but I really thing he is a great actor. He is great at selling a number of roles, whether it is a psychotic murderer (followed by law abiding cop) in Face-Off, a dirty cop turned hero in Snake Eyes, or a cold hardened gun runner in Lord of War (my favorite performance of his). I have yet to see an actor get into character and sell it as well as Nicholas Cage has, even if he does sometimes have a questionable taste in scripts. I feel nobody seriously recognize how good and versatile of an actor he really is.