Factual error: In one scene towards the end of the episode, Hyde is reading MAD Magazine in the Hub when Jackie interrupts him. He says he is in the middle of reading "Smokey and the Band-Aid," MAD's parody of "Smokey and the Bandit." However, the issue he has is June 1976, and the film was not released until May 1977.
Continuity mistake: In the scene where Donna, Kelso, Eric, and Hyde are in The Hub after Eric gets suspended, Donna gets mad at the guys and leaves. But two shots later when Hyde is seen smiling and sipping his soda, you can see Donna's hair on the left side of the shot as if she was still sitting where she was before.