In an otherwise perfectly edited sequence in American Graffiti ('73), director and co-writer George Lucas got one tiny thing wrong. Dragging a cable line with a hook, Richard Dreyfuss attempts to attach the cable to the rear axle of an idling cop car. So far, so good. But all the cop behind the wheel had to do was glance into the side rearview mirror at the wrong time and Dreyfuss would've been toast. He needed to approach from a blind spot.