I'm through almost the first hour and I'm enjoying it immensely.
EDIT: one thing was clear by the end of the video. Hitchens is much more willing to discuss and even admit he might be not be entirely correct on the Iraq issue when he is talking to people he respects. So, keep this in mind if you are ever confronted by Hitchens on Iraq and he suggests you don't know what you're talking about. Point out to him that he has no reason to be so disrespectful of your intelligence and that you would like to discuss the issue like civilized adults. He admits that he has a viceral reaction on the subject and perhaps his emotions are clouding his judgment. :)