Factual error: Cadence arrives for the wedding on a 727. Closer examination of the aircraft's livery reveals it is a Kitty Hawk Airlines aircraft. This would be fine were Cadence air freight, as Kitty Hawk is a cargo airline.

Visible crew/equipment: Right before the wedding Michelle is talking to Jim's father about her vows. Behind them on a table there is a mirror and you can see the arm of a crew member reflected in it several times.

Continuity: In the first scene of the movie, when Jim and Michelle are in the restaurant, they show Michelle with her napkin folded flat on her lap. Later when Jim tries to get Michelle to find the ring the napkin is back on the table folded in the formal restaurant triangle.

Continuity: In the scene where Stifler has "fed" the ring to the dog he is waiting for the dog which swallowed it to go to the toilet to pass it through. When the dog has done this he takes the case from the chocolate cake he is eating to pick up the dogs 'business' and the cake is then lying face down on his plate in the next shot the cake is then the right way up again.

Audio problem: When Stifler is driving his car away after he wrecked the flowers, he says, "Fu**ers, it's not my fault," but it's visible through the window that he's not saying anything.

Continuity: In the beginning, when Michelle goes underneath the table at the restaurant, Jim knocks the phone over to the middle of the table. Later on, when Jim's dad comes in, the phone is back on the end of the table without anyone touching it.