Ba-dum. Ba-dum. Ba-dum. Ba-dum, ba-dum, ba-dum. Good movie. Scary music. And Roy Scheider, playing a stressed-out sheriff in a small beach community, steals the show here, even when Richard Dreyfuss sticks his mug into the picture. As for the shark, well, yeah, that's frightening. But who has time to be nervous about sharks? What about jellyfish? They have no brains! Good god, now that's terrifying.