I finished reading god Is Not Great: How Religion Poisons Everything by Christopher Hitchens. If you are looking for a book that enumerates the sins of supernatural-based religions, this is it. Keep a dictionary handy when you read it.
Along with Dawkins, Dennett, and Harris, Hitchens is considered one of the New Atheists. In watching the first DVD of The Atheism Tapes, however, I noted that one of the interviewees described himself as an antitheist. This struck me as more descriptive and I read now that Hitchens has used that term to describe himself in the past.