Via cupofcoldsick, dig Peter Falk's story about John Cassavetes at a Lakers game:

"John and I were at a Lakers game, and John got into a beef with a guy seven rows in front of us. They were going at it pretty good, trading remarks - the crowd was now following their exchange when the guy in front suddenly turned, pointed at John, and said, ‘Do me a favor - go fuck yourself.’ John instantly shot back, ‘Stand up and say that.’ The guy stood up, 6’2”, looked down at John, and said, ‘Go FUCK yourself.’

John, ever the director, said, ‘Now sit down and say it.’

The crowd roared - so did I - even the 6’2” guy broke into a smile as he started his downward journey."