I like what he says about taking responsibility when the team plays bad. And he does this. There were a lot of games in 2008 that the Packers lost, in which he more than did his part. Yet he always said, "I have to do better." And he wasn't just saying it. You could tell he meant it.
He is always looking to improve. Thats the attitude of a champion. And I respect the hell out of him for that.