God: The Failed Hypothesis, by Victor Stenger
I just finished reading this book. I found it quite informative. In particular, I was interested in how the author dismantled the "anthropic principle" argument.
Of course, he admitted he couldn't disprove the existence of all gods, just the ones alleged to have certain characteristics such as the three "O's" (Omniscience, Omnipotence, and Omnipresence) or those who actively intervene in the world. As to those gods, he posited phenomena that we would reasonably expect if those hypothesized gods existed. He then proceeded to show how the predicted phenomena do not occur. Therefore, he concludes, through a scientific process of theorizing and checking theories by evidence, we can rule out gods defined by certain characteristics.
Stenger has a website with a powerpoint presentation summarizing his book. http://www.colorado.edu/philosophy/vstenger/Godless/Fail.ppt
It was an interesting book. I would be interested in your thoughts.