Bush....Evil, or Just Stupid??

Just read an interesting article about the world's biggest joke, George W Bush. Has an interesting perspective and one that I tend to agree with. However, is he stupid? Is he a puppet for Cheney, Rumsfeld et al? Or is that just to dangerously underplay his role in the world? I would be interested to hear other bloggers views on this matter: Is Bush stupid, or cunning??