Such lumenaries as Richard Dawkins, Sam harris, Terrence Sejnowski, Stuart Hameroff, and Loyal Rue participated. I personally am not a fan of Dawkins or Harris but I found their butting heads with some of the other participants to be quite enlightening. The web site with data on the conference and videos is at http://beyondbelief2006.org though I watched the videos myself via Google videos. Though I found it all rather elementary it still gave me food for thought for my own efforts in this vein. I am constructing a paper on the science of moral ethics and a rather unique and new cosmological perspective I've formulated over the years which I hope to post on a new web site of mine soon.
A 2007 edition of the conference is slated for November of this year.