I've been a fan of Richard Dawkins for a long time, not because of his genetics work but because of the articles he wrote on Atheism. I've also long been fond of his meme concept, simple and elegant and very true. So I was quite pleased when he came out with the God Delusion.
I bought the book because I'm a fan but I didn't expect him to say anything new about atheism that I didn't know, but he surprised me. The last half of the book was filled with quite a bit of scientific info I didn't know and was a very good read so I thought I'd make a link to the Official Dawkins Website: