The Simpsons (1989)

Principal Charming - S2-E14

Revealing mistake: In the shot of Skinner admiring his tater tots, he is interrupted and lifts up his tray. As he inspects he tilts his tray to at least a 90 degree angle but everything, including the milk, stays in exactly the same spots.

Homer vs. Lisa and the 8th Commandment - S2-E13

Revealing mistake: When Homer is imagining being locked in the jail cell and he turns around to find he is in his own home, he turns to look at his family. There is a close up shot of his terrified face, and the people in the background watching the game (I think it might be Lenny and Carl) have no eyes. The rest of their face is fine, but their eyes are missing.

Bart Gets Hit By a Car - S2-E10

Revealing mistake: After Marge has been in court, Mr Burns' lawyer says "Thank you very much Mrs Simpson", and when he does it, the top of his head above his glasses is less pale than the rest of his face.

OL1V3R666

Brush With Greatness - S2-E18

Revealing mistake: When Bart and Lisa enter the H2WHOA! ride, Lisa's eyes disappear for a few seconds. (00:03:30)

H.SI320

One Fish, Two Fish, Blowfish, Blue Fish - S2-E11

Revealing mistake: In the credits it shows Homer eating pork rinds. This is a reused scene from "Moaning Lisa."

The War of the Simpsons - S2-E20

Revealing mistake: When Maude Flanders says 'Oh, okay' to Homer after he asks for peanuts, the lipstick on her lips briefly flickers and disappears for a few frames. (00:04:56)

H.SI320

The Way We Was - S2-E12

Revealing mistake: While Homer is waiting for Marge to come downstairs, both Patty and Selma are wearing turtlenecks. When Homer thanks Mr. Bouvier, in the next wide shot as the twins nod their heads, both of their turtlenecks are not colored in properly at their torsos, so the background is visible through their bodies. (00:16:30)

Super Grover ★

Lisa's Substitute - S2-E19

Revealing mistake: When Marge is yelling at Homer at the dinner table after Lisa goes to her room, the outline of Marge's mouth over her neck when her lips are moving shows the neck line in her lips. (00:18:50)

Simpson and Delilah - S2-E2

Revealing mistake: While Patty tells Selma "Look who's talking" after Homer debuts his new haircut, both of their chests up to their necklaces are the same color as their dresses. Selma's dress also suddenly has sleeves on it.

Simpson and Delilah - S2-E2

Revealing mistake: When talking to the doctor about using his health insurance, Homer's hairline above his ear vanishes in a shot then reappears.