In the U.S., it's like, you start with a great script, and then on set - not everybody, but definitely in the Apatow group - you go off, and you're improvising on camera. So while you're on camera, you're saying… — Bill Hader Copy Share Image
I don't like improvising on camera, particularly, but very often, a scene will not be working, and you rehearse it once or twice, and you realize something's missing. So I'll play with it until it makes sense. — Alan Arkin Copy Share Image
