"The God Delusion". It is a corking good read. There is not doubt of that. It is well argued and researched and covers a surprising breadth of topics in addition to those mentioned here.
Recommended.
Dan
The root of all evil is a two part documentary by Richard Dawkins, part 1, The God Delusion and part 2, The Virus Of Faith.
The God Delusion explores the unproven beliefs that are treated as factual by many religions and the extremes to which some followers have all taken them. Dawkins opens the programme by describing the "would-be murderers who want to kill you and me, and themselves, because they're motivated by what they think is the highest ideal." Dawkins argues that "the process of non-thinking called faith" is not a way of understanding the world, but instead stands in fundamental opposition to modern science and the scientific method, and is divisive and dangerous.
In The Virus of Faith, Dawkins opines that the moral framework of religions is warped, and argues against the religious indoctrination of all children. The title of this episode comes from The Selfish Gene, in which Dawkins discussed the concept of memes.
Both of these videos are about 45 minutes long so broadband is recommended. Google video also has The God Delusion in 5 parts for slower connections.
Like Dawkins I wonder why people leap to conclusions on faith. I wonder why they decide that contrary possibilities to their beliefs are not possibilities at all. Is faith the virus that Dawkins claims it is?

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