It’s amazing anyone goes swimming in the ocean after seeing this, as a giant shark has his way with beachgoers at a New England resort town until the local police chief, a scientist and an ornery shark hunter named Quint decide they’ve had enough. Then the real terror begins. From 1975, still one of Steven Spielberg’s greatest films. 10 a.m. Sunday on the big screen (where it belongs!) at The Senator, 5904 York Road. $7-$10. thesenatortheatre.com.