I really enjoyed the read and Dawkins' spin on religion, evolution, etc.
There were a few things in the book that I hadn't really read or thought about before.
Of course I am an athesit so that made the reading more enjoyable. I read this during amy theist book reading marathon of this, End of Faith, and the Portable Atheist.
Some of The God Delusion can be a bit dry and textbook like, but overall I'd give it a 4/5.