Continuity: When Donna sees Eric in the driveway, and they apologize to each other, her two braids have a mind of their own as they move up, down, and every which way, as she and Forman speak.

Revealing: When Jackie and Fez are doing their Roller Disco routine, it becomes very obvious that doubles are used for many of the routines. Fez does a lot of his own stunts but Jackie does very few. While they do a decent job of hiding the stunt doubles, there are several times when you can see the faces of the doubles and it is obvious it is not Mila Kunis or Vilmer Valderama. And you do not need slow motion or stop action to see the difference.