The truth is, I'm a character guy. That's how I see myself. I always see the role as being far more interesting and important than I am... not all actors approach it that way.
What has emerged as I've gotten older is simplifying the characters I play, unless the role calls for something that is arcane or ornate.
I always have a contract with a character. Even when he's unappealing. The contract is to give him his due. To tell his story. And to keep his secrets.
I get a lot of people coming up to me and saying, "I really hate you." And they say it in the nicest possible way and I accept it. It's the people who come up to you and say, "I really liked your character. Man, he was right!" Those are the ones you worry about.