I just finished it and it sucks.
TVC, the last 10 minutes is like a "religion am bad" music video. It's like fistful says where he interviews people and points out flaws in their logic throughout the film and then tries to tack on a half-assed message to all atheists at the end.
The movie was fine until he got to Amsterdam. Up to that point, he was on the defense but then he I guess thought that the religious problems with christianity in America were in any way comparable to the problems with Islam in the Netherlands. It was especially fucked up how he didn't call out Geert Wilders for all the insane shit he's preached. I lost all respect for Maher after his Dutch interviews so it's a good thing that the movie ended shortly after that.
Also, it didn't seem to me that that rabbi was a holocaust denier. He admits that there was a holocaust of millions of Jews in the film but he disagrees with the idea of a Jewish state. The weird part is that he has a relationship with Ahmadenijad but I think that that rabbi was just plain anti-person who believes in the development and protection of a Jewish nation so it didn't make sense to me how Bill just blew him off.