I didn't watch much of it, because I felt that doing so would on some level admit that there's something worth debating. Creationism requires a fundamentally flawed interpretation of both Scripture and scientific data. Debates like these are also rather disingenuous--it not only elevates creationism as a legitimate position worth pitting against observable and testable positions, but also suggests that it's a central or commonly-accepted tenet of faith (those "50% of US Christians believe in YEC" stats are from the 80s). The Bible is not a textbook, nor does Christianity claim to answer any scientific questions. The doctrine of biblical inerrancy is actually very recent, and demands terrible theology and a lack of historicity.
But hey, I'm just a seminarian with post-liberal leanings.