I'll add some more thoughts I had:
How about a skeptic chat roulette where fans of the show could log on and you would randomly select someone to introduce themselves?
I think a live on-the-fly version of Science or Fiction would be interesting. Not sure of the setup there and how easy it would be to sequester Steve from the others, but I’m sure there’s a creative way to make it work.
There, without a doubt, needs to be some kind of skeptical drinking game between two or more of you. Everyone has to do a shot anytime Bob says “Nano” etc. (on second thought, scrap that specific example. Alcohol poisoning is not fun).