These two guys went on the Unbelievable show twice (part one, part two) that I know about.
In general, the host and producer of this show does a decent job of finding a bold, outspoken, and articulate Christian apologist and putting him up against someone who has little to no experience at public speaking and debate, a meek atheist who talks softly and haltingly. These episodes are no exception to the general run of the show, although there have been a few shining exceptions on occasion.
The program doesn't get very far in before David Robertson starts batting Adrian Hayter around like a cat toying with a mouse. It is vicariously embarassing to listen, and it serves as a warning to those who accept an invitation to play the role of Alan Colmes on a network that exists for the sake of making you look foolish.
You can safely skip these episodes, since there is rather little substantive debate to be found therein.