I almost want to give him two stars because he was so utterly incompetent that I think he truly did not understand the implications of the decisions he made and many were the result of his cabinet rather than Bush himself. Furthermore, there were some good policies implemented while he was in office (his AIDS program, for example).
But no. One star.
I hate to link to Keith Olbermann, since I think he's basically liberal O'Reilly, but I think he nailed this one:
https://www.youtube.com/watch?v=4-j1Q0zeHo0