"I have a great deal of respect for the craft, I don't know how much respect it has for me. But it's a precision process. Doing it on stage would be, I think, terrifying. Doing it on film has its own difficulties, because film is not conducive to spontaneity. You might have a run through and get a few chuckles at eight o'clock in the morning, but you don't keep laughing at the same thing all day long."