Steve Stifler: Ladies, you'd better be working hard - you weren't hired for your looks. Actually you were. Not you.
In the movie Band Camp, which takes place in 2005, Jim's dad tells Matt Stifler that Michelle is pregnant, so Jim's son should be 7 years old in this film, not 2.
While this film is the fourth main-series entry, it is technically the eighth film in the overall franchise, as four direct-to-video spin-off movies were released between the third film (2003's "American Wedding") and this film. Eugene Levy is the only actor to appear in all eight films, and co-star Chris Owen is the only other actor besides Levy to appear in both the theatrical films (including a cameo in this entry) and one of the spin-offs. (With a role in the first spin-off "American Pie presents: Band Camp.").