Revealing mistake: At the end of the episode when Leroy is trying to get a cat to come down off the house, it jumps at him and he gets into a "fight" with the cat going at his face. It is painfully obvious that the cat is just a stuffed toy and David Mann is just controlling it.
Revealing mistake: In the scene where Rigby returns to the office and finds 15 messages on her answering machine, the second message is addressed to the name of the actor (Meaghan) rather than the character.
Other mistake: Curtis grabs Alisha's hand without activating her power. (00:16:45)