Wow, I'm suprised people are so ambivalent about him being chosen. Personally, I think he looks totally wrong for Bond. Tall, dark, and handsome is how I view Bond - Brosnan was all of these and fit the role like a glove. Now I realize to each their own - Bond seems to get recreated by each actor that plays him. However.... I really just don't see it in this guy.
He's not exactly Mr. Good Looks (not ugly, but not exactly Bond material - I could see him playing a villain), and looks older than Brosna, despite bing only 37. He's too craggy, not smooth enough. Again, maybe a villain?
I just think that the producers are making a big mistake. After Brosnan, it seems like they are taking mucho risks by "downgrading" to a little known actor who is probably farther from the established Bond mold than any actor before him. I don't know, maybe he'll be able to pull it off, but I have some SERIOUS doubts at the moment.