It starts here, and continues at Sullivan's blog. They're really just getting started, but it should be good.
So far, Harris has avoided the mistake of thinking all believers accept inerrancy (which sometimes seems implied in his books) and Sullivan is talking about the need to make room for doubt in religion. I think Sullivan is missing that many fundamentalists have learned they have to work around doubt. There's an urgency to keep doubt from turning into unbelief, but in practice its only moderately different than Sullivan's approach.
Technorati tags: Sam Harris, Andrew Sullivan, faith, religion