I've really enjoyed reading Peter Siebel's Coders at work book. At the end of the last chapter (Don Knuth), i tought that the interviews selection was good but a little bit too old-school oriented.
So, in your virtual 16th chapter, which guru would you interview? In my 16th chapter, i would be amazed to read an interview of John Carmack.
Please, link your interviewee to some web reference (ex:wikipedia) when is possible.