Owen Gleiberman Chief Film Critic The scene where Robert Shaw gets eaten in “Jaws” is one of the most thrilling moments in movie history. After all of Steven Spielberg’s virtuoso framing and cool ’70s Hitchcock scare tactics, the shark’s big-mouthed consumption of a man who fully deserves to be eaten had a shockingly raw “Look, there it is!” exploitation-film brazenness. (One not inaccurate way to describe “Jaws” would be as the greatest B-movie ever made.) “The Flood,” an alligator-attack movie that’s also a violent prison-break thriller, takes its cue from that scene. Set in a backwater Louisiana police station during a hurricane, the film isn’t shy about serving up its big, nasty human-torso-meets-jaws moments. It’s basically a slasher movie with teeth.