Scary Movie, while hilarious, relied too heavily on gross-out gags and crudeness. While Shriek If You Know What I Did Last Friday 13th has these too, they are fewer and farther between. It's quite a funny movie, although some of the jokes take too long building up, however they are almost always worth the wait. Like any other parodies, it requires you to have a fairly extensive knowledge of horror movies, especially Scream and I Know What You Did Last Summer. There are loads of visual jokes to make it worth watching again and again. The acting is decent enough, though none of the stars stand out that much. I would recommend it to anyone who liked Scary Movie (its more of the same) and to those who didn't (its a lot less vulgar) Score: 8/10