http://www.godtalkatuws.blogspot.com/.) One of the most famous debates in recent times on the topic was between Professor Richard Dawkins (of Oxford) and Profesor John Lennox (also of Oxford). Held at the University of Alabama in Birmingham in 2008. The topic was specifically the title of Dawkins' book, The God Delusion.
The video can be found here. The whole debate goes for an hour and 40 minutes (153 MB!). Let me know what you think.
You may be interested to have a look at some of the other work Dawkins is doing. Here is a report on Dawkins' crusade regarding Faith Schools. A series of videos called Faith Schools Menace was released on August 18th.
His own website is here, and his related founndation: "The mission of the Richard Dawkins Foundation for Reason and Science is to support scientific education, critical thinking and evidence-based understanding of the natural world in the quest to overcome religious fundamentalism, superstition, intolerance and human suffering." Sounds like a crusade to me. No wonder people are calling him a 'fundamentalist'!