Is it possible for Bush to wipe the smile off of his face?

It was bad enough that Bush seemed so coached for the photo op by the window on AF1 yesterday, with his clenched fists, but what the hell is the matter with the guy when he smiles while talking about the Katrina disaster? I just saw the ABC interview and couldn't believe that the guy could sit there once again with his smug face and smile as he talked with Diane Sawyer. What's so funny about your failure to help the suffering people of New Orleans? What the hell is the matter with this guy? I know that your oil pals are raking in the bucks once again but c'mon. People are dying, George. What's so funny?