As in his debate a few days later with Sam Harris, he succeeded in frustrating those who might have wanted him to get to grips with the important issues. Lawrence Krauss is one of the foremost scientists in the world today, and he has much interesting insight into the nature of the cosmos, and — because he's thought about these things — whether the cosmos has a god in it. But Craig simply repeated his painfully circular syllogisms ad nauseam, and the whole thing seemed like a waste of time.
Krauss, it appears, thought so too. In a substantial guest-post on P. Z. Myers' blog Pharyngula he explains why:
http://scienceblogs.com/pharyngula/2011/04/05/lawrence-krauss-vs-william-lan/
But perhaps before reading Krauss's post mortem report you should watch the debate itself (but be warned — the audio on these videos is dreadful):
Part 1 of 6 http://youtu.be/71ZhJL56bdQ
Part 2 of 6 http://youtu.be/jHHTYbusTmw
Part 3 of 6 http://youtu.be/Tutz5id90lk
Part 4 of 6 http://youtu.be/vpv5mMRFUgQ
Part 5 of 6 http://youtu.be/WVOCxP8aWIY
Part 6 of 6 http://youtu.be/Fs_pgaSrxP8
P. Z. Myers also has some things to say about the debate, this amongst them:
Also, Craig claims to be using Bayesian logic. No, he is not. Scribbling a few trivial equations on his slides does not substitute for Craig's painful ignorance of physics.