At the end of movies, as soon as the credits roll the audience also starts to roll out of the theatre. By the time the credits are over, the theatre is empty. Yet when the credits rolled at the end of the session of the film Michael Clayton I attended last week, nobody moved. Not one person. The reason was George Clooney. He was still on screen, sitting in the back of a taxi, staring straight ahead, as the credits flashed beside him. He wasn’t doing anything else, just sitting and staring. Most people don’t walk out when Clooney is still on the screen, even doing nothing. He is a magnetic force.