Alister McGrath is Professor of Historical Theology at Oxford University. In this book McGrath engages in depth with the atheistic worldview of Richard Dawkins (himself an Oxford Don). This book will take a bit of reading but will give lots of food for thought to anyone seeking to think seriously about the apparent onward march of atheism within western thought and culture.
Recommended by: Niall Lockhart
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Free MP3 Download
Another excellent resource on this whole area is provided on the site of the Oxford Centre for Christian Apologetics. A response by Alister McGrath to Dawkin's athiestic views can be downloaded as a free MP3 file from this site.
The site address is http://www.theocea.org/