Then again now that I look back on it, this picture does have early signs of balding. Look on the sides of his head. Recently he has resurfaced in Post Grad, which I checked out this weekend. He does look like he is balding in Post Grad, but not as bad as in real life. So my guess is he had a piece, at least to cover that bald spot in the back of his head. The best proof of his bald spot came from reader Blue Gold, who sent this clip of Michael Keaton from 2008: