The Simpsons

Bart's Comet - S6-E14

Revealing mistake: When a comet is about to hit Springfield, everyone is standing on a hill in the shadow of it. But the shadow is still there even after it breaks up.

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The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1

Revealing mistake: When Marge is speaking on the phone to her sisters, her sisters say something that sounds like they said that Homer is ugly. Marge then puts down the phone wire that she was curling round her finger. You can temporarily see that the phone wire disappears when Marge puts it down. It is at the very end of an early scene, because as soon as this happens it changes to another scene. (00:04:40)

Beyond Blunderdome - S11-E1

Revealing mistake: When Homer is giving Marge, Lisa and Bart money, Homer puts his hand on Bart's shoulder and whispers 'Mel's movie really stinks'. When he lets go of Bart to say this, he leaves his fingers on Bart's shoulder, but he still has fingers on his hand.

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.

$pringfield (or How I Learned to Stop Worrying and Love Legalized Gambling) - S5-E10

Revealing mistake: At the dinner table Homer says something like "as you know it's always been my lifelong ambition to be a blackjack dealer." During this line, for some reason they appear to have used a clip from an older episode (Season 3 / Episode 3 - When Flanders Failed) and dubbed the line over. For one thing, the animation is of a much lower standard than the rest of the episode. And perhaps even more telling, when he says it, he is holding a fork with some food on it, but from the earlier shots we know there is no food in front of him.

David Mercier

Rosebud - S5-E4

Revealing mistake: When we see people digging Bobo out of the ice, they put him in a bag. If you look carefully you can see another Bobo put in another bag just before the shot changes.

OL1V3R666

The Call of the Simpsons - S1-E7

Revealing mistake: The scientist who describes Homer as a brilliant beast seems to have some of his hair magically floating above his ear - it's not connected to his head, yet it moves alongside his head. (00:20:40)

Radio Bart - S3-E13

Revealing mistake: At Wall E. Weasel's, when Nelson is throwing balls into the 'Skeeball' machine, the animation is repeated because Bart keeps moving in and out of the camera's view. (00:04:10)

Yoshi

The Simpsons mistake picture

Mr. Plow - S4-E9

Revealing mistake: At the car convention, Homer chides Bart through the windscreen of Bonnie and Clyde's car. However, Homer's body is not seen through the holes in the windshield, which shows that the holes in the windshield were achieved via a layer of red-coloured holes. (00:04:25)

The Simpsons mistake picture

Lisa on Ice - S6-E8

Revealing mistake: After the buzzer goes on the final game and the crowd reacts one of the crowd members says "Tie Game.", then some woman in a red top says "What the Hell.". If you look at the woman when she moves her head you can see the nose on her face disappears. (00:19:55)

Lummie

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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.

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Show generally

Continuity mistake: This is a mistake for the introduction from seasons 2-20 (1991-2009). When Homer screams, he turns round. You see this in a wide shot. There are no boxes to the right of the door in the garage. However, two just appear out of thin air when he runs through the garage. (00:01:50)

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The Cartridge Family - S9-E5

TV Announcer: The Continental Soccer Association is coming to Springfield. It's all here: fast kicking, low scoring. And ties? You bet.
Bart: Hey Dad, how come you've never taken us to see a soccer game?
Homer: I don't know.
TV Announcer: You'll see all your favorite soccer stars. Like Arriaga, Arriaga II, Barriaga, Aruglia, and Pizzozza.
Homer: Oh, I've never heard of those people.
TV Announcer: And they'll all be signing autographs.
Homer: Woohoo!
TV Announcer: This match will determine once and for all which nation is the greatest on Earth. Mexico or Portugal.

Phaneron

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Trivia: The only voice artists who regularly perform as only one character are Yeardley Smith as Lisa and Marcia Wallace as Edna Krabappel. Yeardley has also voiced different versions of Lisa (Lisa Jr. and Lisabella) in at least two other episodes.

He's My Brother

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Question: Which episodes feature the "Howling Dog" (usually used on outside shots of buildings)?

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