@Nighthawk: Have you read Richard Dawkins's The God Delusion? Is it any good?
I have.
Well, it depends. It's definitely a good read
As for what the book sets out to do:
1) If you're a firm theist (or deist, or any kind of adherent to the idea of the supreme), chances are Dawkins' aggressive approach will put you off. His arguments might bounce off, good though some of them are, if for no other reason than because he's unapologetic in his firm denial of the validity of faith in a higher power. Given a chance, he'll explain why that's not a valid option.
2) If you're a wavering borderline atheist, there's a good chance he'll push you over to our godless side. We have cookies
3) If you're an irrational atheist (and by that I mean not atheistic because you believe Reason demands it, but
because), he gives a good case why you're as wrong as firm theists.
4) If you're a rational atheist, he's preaching to the choir but gives a few good examples of arguments theists use to give validity to their claims and offers a few rebuttals.
Now, those are just my predictions that may or may not turn out to be true for some people.
I'd recommend the book no matter what your stance on faith and religion is. If Christians, Muslims and the like can have their say as to why their sets of religious beliefs hold great(er) merit, then it's only fair that we have a chance to explain why reason and why materialism. More books are needed and more patience in explaining.
Patience is hard to find, though. When you see a certain point as obvious, self-restraint is needed in elaborating why it's obvious to those who don't see it as such. Dawkins does a good job trying to explain his views, but he does so from within his value system. Not to the point theists tend to take it, but a certain degree of acceptance must be made in good faith (sic), just so you see the world from his point of view. Which is shorn of everything but the material, because that's the only thing we can witness, manipulate and explain. From that which is blatantly real, he explains why god (or gods) isn't a good idea. Even if they do exist
Sorry for the longish answer. Hope it was useful