Paul Giamatti is a true actor. You really believe that he got into acting because he loves it for what it is. You'll never see him in any tabloids and you won't hear any gossip about him. In his roles, you sense more realism than many other actor's who are considered more talented than he.
To me, Paul Giamatti is an actor's actor. He has crossed many different genres such as comedy (Private Parts), mystery (Lady in the Water), drama (Cinderella Man) and others while exceeding expectations each time. He is a great character actor especially in such portrayals as Harvey Pekar in American Splendor and as Miles in Sideways. I feel these performances should have at least garnered him an Oscar nomination but sadly so far he has been snubbed. Not sure why, but he has many notable performances to garner recognition even from movie fans with high expectations. I look forward to many more films with Paul Giamatti and I am firm in the belief he will not let me down.