Given Chuck’s love of Zarek, this is a no brainer. I’ve heard him on some geek show or another, so I know he does connect with 'casts. In fact, the podcast I heard had a crazy-long interview with him during which he rambled on about the morality of the show, his character and other tasty subjects.
Just did a quick search, and I believe the podcast interview in question is here: http://www.geekson.com/archives/archiveepisodes/2007/episode040907.htm
He must be getable. Maybe there’s info on his site? What say you all?