A Midwinter Night's Dream - S1-E17
Continuity mistake: In the opening scene when Daphne and Eric are talking, the dish towel over Eric's shoulder is laid flat in some shots, and is twisted up in others.
La Behemoth - S1-E54
Continuity mistake: As Marita walks over to the washing machine with a stack of clothes, its round door opens automatically between shots.
Continuity mistake: In the beginning of the show, Cory is showing Shawn something he wrote in the school paper. Cory walks away leaving his backpack on the bench. In this whole scene to the point where Cory says, "Is it just me or is it just me" sometimes he is wearing his backpack, and sometimes he isn't. (00:00:20 - 00:03:05)
Continuity mistake: When Beavis is getting the idea to use the plate as a discus, the amount of cookies on the plate varies depending on the shot.
Revealing mistake: When Lois and Clark are checking out Lenny Stoke and Derek Camden on Lois' computer, you can see the computer screen showing the script for Lois in that scene. (00:07:40 - 00:08:20)
Danny's Dead and Who's Got the Will? - S4-E12
Continuity mistake: At the start, when Fran joins Niles, she's holding a green mug in her left hand and a muffin in her right hand. But the mug and muffin suddenly switch hands when Fran and Niles head to the sofa.
Rocko's Happy Sack / Flu-In-U-Enza - S1-E11
Continuity mistake: Rocko's Happy Sack: Rocko scans all of his groceries in the checkout lane. Then, when Filbert tells Rocko that his total is $150, the groceries have disappeared from the counter. They reappear when Rocko finishes shouting at Filbert, then disappear again in the next shot. (00:11:09)