Nikolai

Lisa vs. Malibu Stacy - S5-E14

Revealing mistake: When Lisa says "Now all we need is a name", Maggie's head disappears for a split second right before the shot changes to Bart talking.

Nikolai

Homer and Apu - S5-E13

Revealing mistake: Apu's moustache disappears for some seconds after having his name tag removed.

Nikolai

Smoke on the Daughter - S19-E15

Revealing mistake: When Lisa turns on the light while dressed in her Angelica Button costume, her mouth disappears for a single frame.

Nikolai

Coming to Homerica - S20-E21

Revealing mistake: While Lou is talking to Chief Wiggum about having his belt stuck to a street sign, Lou's mouth disappears for a single frame.

Nikolai

Pulpit Friction - S24-E18

Revealing mistake: When Reverend Lovejoy arrives at church in the hot tub, there are two Carls right next to each other in the crowd.

Nikolai

Lisa's First Word - S4-E10

Revealing mistake: Part of Homer's right arm flashes white when he asks his father for $15,000. (00:08:50)

Nikolai

When You Dish Upon a Star - S10-E5

Revealing mistake: At court, as Homer is walking towards Alec Baldwin, Kim Basinger and Ron Howard, Bart is in the background sitting with the rest of the Simpsons, but his head is missing from his body. His head then reappears back on his body after about 2 seconds.

Nikolai

Shinin' - S2-E7

Revealing mistake: During the "Cribs" segment, when Flonominal is in the hot tub, Riley is behind him moving around oddly, like a paper puppet, as if the creators forgot to animate him.

Nikolai

Lisa Gets an A - S10-E7

Revealing mistake: Two kids in the middle of the class do not have a test. However, they are shown writing on their desk as if they had a test paper.

Nikolai

There's No Disgrace Like Home - S1-E4

Revealing mistake: When the Simpsons are eating at the dinner table, Marge's necklace keeps flashing white.

Nikolai

Homer's Night Out - S1-E10

Revealing mistake: When Bart makes a copy of his photo for Lewis, footage of Milhouse inserting a coin into the copy machine is used. You can see Milhouse's pink shirt sleeve instead of Bart's orange shirt sleeve. This same shot is again reused a third time seconds later. (00:09:55)

Nikolai

Krusty Gets Busted - S1-E12

Revealing mistake: When Homer enters the Kwik-E-Mart, the automatic door doesn't fully open, and Homer's left arm goes right through it. (00:03:40)

Nikolai

The Telltale Head - S1-E8

Revealing mistake: The blonde woman's midriff (from the Space Mutants movie) flashes pink for a frame.

Nikolai