Continuity mistake: When Marge comes into the living room at the end, the chinese checkers game that Bart and Lisa were just playing is gone. (00:21:15)
Continuity mistake: During the scene where Homer invents the 'Flaming Homer,' The items that Patty and Selma are holding keep disappearing. The beer can in Patty's hand also appears suddenly. (00:05:45 - 00:06:50)
Continuity mistake: In the video store, Homer grabs the 'Football's Greatest Injuries' tape with his right hand. He was also holding Maggie with his right arm, so he should have dropped her. (00:06:00)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Continuity mistake: When Bart gets on the bus, we see one of the twins sitting near The Front of the bus. In the next shot, we see both twins sitting at the back. The shot after that, we see the twin near The Front again, running to the back. (00:10:30)
Audio problem: When Homer pulls Lurleen away from her trailer, she says "Ooh" but her lips don't move. (00:09:20)
Radio Bart - S3-E13
Continuity mistake: As Bart gets the rope snug around the tree stump so he can get the radio, the well and the police barriers have vanished. (00:15:45)
Burns Verkaufen der Kraftwerk - S3-E11
Continuity mistake: When Mr. Burns shows Smithers the picture of him and Elvis, he is standing beside his desk, which is gone for the rest of the scene. (00:10:30)
Burns Verkaufen der Kraftwerk - S3-E11
Continuity mistake: As Mr. Burns and Smithers are talking on the phone, we see a hand holding the receiver, and when they're finished, the next shot shows us a black skinned referee. His skin color was yellow before. Also, the phone is nowhere to be seen. (00:15:55)
Continuity mistake: As Homer watches TV at the beginning, if you look really closely, you can see the remote on the couch colored to be exactly like brown. It then disappears eventually, and then reappears. (00:01:35 - 00:02:30)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Other mistake: As Mr. Burns' fireplace rotates, the items on the top should have fallen off, but they didn't. They also disappear/reappear between frames. (00:16:10)
Revealing mistake: After Bart gets promoted to Hall Monitor, when he tells the girl at the fountain to keep the line moving, the kid behind her drinks from the fountain but the water does not go into his mouth. (00:13:40)
Like Father, Like Klown - S3-E6
Continuity mistake: When we see the overhead shot of Krusty crying at the Simpsons' table (just before he explains his story), we can see that Krusty has no meat on his plate. When we first see the family and Krusty after the story, there's meat on Krusty's plate. This is visible in the 'Homer's tuxedo' mistake picture.
Like Father, Like Klown - S3-E6
Continuity mistake: During dinner, Krusty does not have a shirt pocket until he pulls out his handkerchief. (00:06:45)
Audio problem: When Homer sulks about not knowing anything about Bart, his first words of speech doesn't match his mouth. (00:08:20)
Continuity mistake: When Homer and Marge are entering the cinema, Marge is taking Maggie with her. But when watching the film, Maggie is nowhere to be seen.
Burns Verkaufen der Kraftwerk - S3-E11
Continuity mistake: There are several errors in the plant's parking lot: 1, in the overhead shot of the plant, we see Homer drive in, and there are parking barriers on the road. These disappear in the next shot. 2, As he drives in, there are at least eleven parking spaces on the right side of him. Carl takes up one spot, and in the next shot there are about 3 parking spaces left. 3, When he parks, we see several cars behind him, but in the shot before that, no cars are visible, not even parking spaces, and 4, when both Homer and Carl drive in, we see orange lines on the road, which weren't visible in any other part of the scene. (00:07:00)
Continuity mistake: When Barney enters the tavern, we see a guy working with Moe. His hands change position between shots. (00:16:15)
Other mistake: When we first see Nelson's Roadkill 2000, Nelson is moving backwards, though we see his legs as moving forward. (00:13:25)
Tree House of Horror II: A Simpsons Halloween - S3-E7
Continuity mistake: When Homer gets turned into a jack-in-the-box, we don't hear the chair he was just holding crash onto the floor. Bart doesn't make it vanish, as we see it on the floor when Homer is turned into a jack-in-the-box. (00:13:20)
Continuity mistake: There are many mistakes when Homer is checking for donut flavors, i.e. the positions of the donuts, the topping, etc. (00:03:50)
