The best thing that can be said for "The Dawkins Delusion?" is that at under 100 pages, it didn't waste too much of my time. To save you from wasting any of yours, let me summarize (and paraphrase): "Dawkins makes hateful baseless claims and ignores evidence that cuts against his position." If you're hoping for this book to say more, you'll be sorely disappointed (though perhaps appreciative of the irony).
I think perhaps I just need a break from this genre, for it has gotten to feel like a horribly juvenile case of "he said, she said." Here are some of my major critiques of this particular installment:
As I already implied, the authors mirror many of the things they criticize about Dawkins. For instance, they chastise his use of religious extremists examples as being representative of the faithful as a whole. Which is fair, until they respond in kind: "Atheism must indeed be in a sorry state if its leading contemporary defender has to depend so heavily--and so obviously--on the improbable and the false to bolster his case." I'm not sure who on either side would consider Dawkins to be representative of atheists as a whole, making the authors, at best, hypocritical (at worst - dare I say - deluded).
Other parts of the book are merely irrelevant: "I subsequently found myself persuaded that Christianity was a much more interesting and intellectually exciting worldview than atheism." Perhaps law school has gotten the best of me, but I am desperately waiting for the "And therefore..." Who cares about what is interesting or exciting? I thought this was a discussion about what is "right," or at the least, what is well argued.
Finally, the "I was a believer-turned-atheist" or "I was an atheist-turned believer" claim is 1) completely overdone, and 2) entirely unpersuasive. I'll stop there because this is a review, not a rebuttal, but hopefully these observations underpin at least some of the weaknesses I saw in this book.