Continuity: In the scene where the Asian guy is peeing off Stifler's balcony, he knocks over a plant and knocks out Christy. In the next shot the plant is back, and in the one after that it is gone again.

Revealing: When Jim's Dad walks in on him and the girl having 'goodbye sex', Jim scrambles around trying to cover himself. At one point, as he's going from the floor to the bed, you can see the string bikini or whatever he's wearing so that he doesn't accidentally expose himself.

Other: When Jim is at band camp and is caught by a counselor, he runs into a bell. The bell swings TOWARDS Jim instead of away from him, meaning he didn't even touch it.

Continuity: Stifler tries to 'go fishing' for some girls and throws a long bomb to the other guy who falls onto some bikini clad girls having a picnic, as he lands a previously intact Pepsi bottle is suddenly crushed before he even lands on it.

Continuity: When Jim is sitting with his Dad in the waiting room, after he glued himself, he is holding the videotape at an angle which is toward him. The woman in the wheelchair could not possibly see the title of the video but, when they show her noticing it, the tape is being held at an angle facing towards her.

Deliberate "mistake": During the "breaking up" scene with Jim and Michelle when they're inside the cabin, her hair is crimpy, but when she walks outside and gets into her car, her hair is straight. This is because Alyson Hannigan filmed this particular scene during a break in the filming of a "Buffy the Vampire Slayer" episode.

Continuity: When Jason Biggs and Alison Hannigan are first reunited at Band Camp, watch the camper extras walking from left to right behind Michelle. They walk off screen to the right completely, and then in each succeeding shot of Michelle, the final two or three walk off right again and again and again.

Continuity: After the lesbian scene, when Stifler brings in a box of porno tapes, he tosses a tape to Jim. At one angle, the tape lands towards Jim's feet. In the next angle, the tape lands on Jim's chest.