The funniest part is towards the end. After baiting Krauss into admitting that he thinks there is no God, we can extract the following argument from the astute (and clever) Mr. Colbert:
1. The universe came from nothing. [Krauss premise]
2. God does not exist. [Krauss premise]
3. If God does not exist, then God is nothing. [Implied]
4. Thus the universe came from God.
Colbert is a comic genius. (He studied mostly philosophy in college until his theater career began to take off).