Yes. I've witnessed how John Searle turns undergrad Cognitive Science majors against reductionism at UC Berkeley. Searle's "emergence" and Chinese Room argument would be very fertile topics for a diavlog.
It would be interesting to see Searle debate anyone who didn't defer to his high status and common-sense-sounding arguments and pressed him to the wall on what exactly would happen if you, say, simulated a human brain in high resolution. His intuition pumps are powerful ("thought is just like digestion, you don't really believe a computer will digest food if you simulate gastric enzymes, do you?"), but he never really presents any argument on his views of consciousness or AI, at least what I've seen.
Bloggingheads.tv can't exactly call up, say, the President of France and get him to do a diavlog, but they have some street cred with mid-rank celebrities and academics. With that in mind, how would you fill in this blank?
"I would really love to see a diavlog between Yudkowsky and ____________."