I am pleased to see that many of the first names that popped into my head (e.g. Daniel Dennett, Scott Aaronson, Richard Dawkins, David Chalmers -- and of course Robin Hanson) have been mentioned.
But, surprisingly, no one's yet suggested Steven Pinker. He is one of the public faces of evolutionary psychology, and (nevertheless?) has some sympathy toward mysterianism about consciousness. (And considering that yesterday I came across an old comment by Eliezer in which he said that the English language has no rules, Pinker may be just the person he needs to talk to.)
Um... I am very well aware of the concept of linguistics, thank you. I was speaking rhetorically.
(EDIT: Though Steven Pinker is still a fine suggestion.)
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 ____________."