Okay, any 4th installment can't be that good right? WRONG! It was non-stop laughter. Even after the movie was over, the movie scene with Stifler's mom and Jim's dad sent you out of the theater still laughing. They did a great job with this movie. It had lots of juvenile humor, but with heart. Anyone who gave this movie a bad rating was obviosly not a fan of the series. Plus, I never did understand why someone goes to an"R" rated movie and complains that it was discusting and full of bathroom humor.