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 ____________."
William Gibson? http://www.williamgibsonbooks.com/index.asp
He also thinks a lot - and cleverly - about the future but in a different way from Eliezer.