From Close Encounters of the Steve Kind:
"I was sitting in Steve's office when Lynn Takahashi, Steve's assistant, announced Knuth's arrival. Steve bounced out of his chair, bounded over to the door and extended a welcoming hand.
"It's a pleasure to meet you, Professor Knuth," Steve said. "I've read all of your books."
"You're full of shit," Knuth responded."
(via Rajeev Ramachandran's Google Reader)