Andrew W.K. (musician)
He's outside of your field but is a breakout in his own field. He's open minded and sensitive to argument. But he seems to believe in some kind of weird solipsism. Talking with Andrew W.K. would let you expound upon your materialism and reductionism. You would also reach well beyond your geek readership to the armies of slightly confused, self-conscious, college educated Americans called 'hipsters'---a lot of these people are standing around waiting for the next movement to happen, and your ideas could be very seductive to them.
Finally, Andrew W.K. would probably do it. Despite acting like a badass, he is fundamentally a nerd (a music nerd) and I think he would respect you and try hard to understand you. He also seems to have the intelligence and honesty for arguments about future technologies.
I cannot tell whether this is humour or sheer balls. Either way, I salute you sir.
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 ____________."