This is a January 2008 debate at Stanford University between Christopher Hitchens and Jay Richards on the topic: Atheism vs. Theism and The Scientific Evidence of Intelligent Design. Also moderated by Ben Stein, as this was a debate leading up to the Expelled movie release. Thanks to Wintery Knight for providing video links here.
Full MP3 Audio here. (1hr 50min)
More Hitchens debates here. More from Jay Richards here.
Last year's 3-minute post here.