It isn't just the game that makes it fun. In the heat of the moment we get to see players, coaches, and fans do all sorts of goofy things. When you watch the you can't help but think 'D'oh!' because you know the person involved just had a serious brain fart.
Half way through the first Saturday of action there are two clear candidates for the Homer Simpson Play of the Day:
Rice kick returner Jeremy Eddington calling for a fair catch in the second quarter: