Discovery Channel’s Shark Week is attacking on schedule this Sunday, but it wouldn’t be summer without several showings of the ultimate beach movie, the ultimate summer movie, and the ultimate shark movie. Steven Spielberg’s original Jaws, now 40 years old, remains as potent as it ever was. Yes, CGI effects could improve upon the mechanical shark used in this 1975 classic thriller, but had Spielberg had access to those special effects back then, Jaws probably would not have been nearly so terrifying. He had to hide the shark for much of the movie – and what we didn’t see, and supplied with our own imagination, was much more terrifying. He also managed to get astoundingly good performances from his three key players: Roy Scheider, Richard Dreyfuss, and Robert Shaw. They may need a bigger boat – but we’ll never need a bigger summer shark film.