Regardless of how you feel about Steven Fry and his position on the Catholic Church and faith in general, you have to admire this answer on purely rhetorical grounds. It’s structured beautifully.
But my favorite part is the look in interviewer Gay Bryne’s face at two or three points during this two minute video.
Appalled is probably the best way to describe it, but even that doesn’t seem to do it justice. He seems to almost knock Bryne right out of his chair by his words.