I just saw this movie and i must say its entertaining and amusing.

I agree with many things he says, although I am "religious". But what this film shows is how uninformed and "cocooed" many religious people are, but we must question that he probably wanted these people in his film and not the more enlightened religious people.
That Vatican astronomer for example showed that he was religious but still not stupid and Maher actually was sympathetic to this man. I do not believe it is because someone is religious he is bad or stupid but rather how much he has really understood the meaning of his religion and of religion and faith in general.

One point Maher makes that I agree with him is when he says that the muslims do not recognize the "bad" parts of islam and the Koran, about infidels and holy war etc. He there says that they say so only to please an outsider. And to a large extent I agree with this observation. This is what I call "nice-islam", that infront of cameras muslims say no to these things and they claim for example that women and men are equals etc. While in reality it is not so.

When Maher talk of religion he also means religions that have scriptures, and I'm critical of these kinds of religion also as they are too segmented and the religious laws for example were written for a time and a place that does not correspond to today or tomorrow. Whereas religions that do not rely as heavily on scriptures are more adaptable and religious laws are subject to the social standards of the place and the time of today.

Back to the film..It has some inaccuracies and half truths that are often there to prove Mahers point.

I lastly want to say that many atheists that have made films such as this one, like that brittish fella (forgot his name), often claim that religions are intollerant and make a point out of that. But in the same time they themselves are quite intollerant and demeaning towards religious people.
But I must say I was quite entertained and amused by this film, so not bad to watch.