My roommate and I take bets on this whenever someone who has written a book appears on ‘The Daily Show with Jon Stewart’: If the author is even remotely Republican-leaning, Jon will not hold the book up to the camera at the end of the interview. This axiom holds true no matter how high the person is in the Conservative movement. We haven’t seen a single exception to this axiom yet.
One of the best interviews I’ve ever seen on TDS was the one with Kurt Vonnegut.