Continuity mistake: Burns brings out the mystery box and places it on the desk. This box then simply disappears. (00:03:40)
Cape Feare - S5-E2
Continuity mistake: The design of the wall socket in Itchy and Scratchy changes between shots. Note the screws holding the cover. (00:03:40)
Cape Feare - S5-E2
Continuity mistake: At the very start, McBain walks out on stage and there is no gold star on the stage. After he says hello, he walks and stands on a gold star. (00:01:50)
Cape Feare - S5-E2
Continuity mistake: When captured at the end, Bob says, "By Lucifer's beard," and grabs hold of the railings. When the shot changes, he's back to hanging over the railings. (00:20:20)
Cape Feare - S5-E2
Continuity mistake: When Bob is laying in the public street, note the position of Bart's items he dropped. The strap moves, and the position of the apple in relation to the edge of the sidewalk slab changes. (00:16:00)
Cape Feare - S5-E2
Continuity mistake: When the Simpsons arrive at Terror Lake, the car is parked in the middle of the road away from hedges. When Bob is standing on the rake, the car has now moved next to a hedge without being driven. (00:14:50)
Cape Feare - S5-E2
Continuity mistake: When the Simpsons arrive in Terror Lake, Homer has his arms around Bart and Lisa. However, when the shot changes to behind, his hands are on his hips. (00:14:40)
Cape Feare - S5-E2
Revealing mistake: After Bob has announced who will be safe, Homer runs into Bart's room and, as the door opens, it goes through a baseball bat on the floor. (00:11:40)
Homer's Barbershop Quartet - S5-E1
Continuity mistake: The display of Homer's control desk changes between the shots of the chicken at the work station. (00:19:20)
Homer's Barbershop Quartet - S5-E1
Continuity mistake: When Homer wipes the dust off the box, there is still some visible dust on the box. When the shot changes, this dust has disappeared. (00:16:40)
Homer's Barbershop Quartet - S5-E1
Other mistake: When Grampa is listening to Baby on Board on the radio, the top right of the screen has a purple rectangle flash on screen for 1 or 2 frames. (00:12:30)
Homer's Barbershop Quartet - S5-E1
Continuity mistake: The wording "Be Sharps" changes size on the album when the family is laughing at Bart. It gets much smaller. (00:04:00)
Homer's Barbershop Quartet - S5-E1
Continuity mistake: Skinner puts the helmet on his head and we see Hermann from inside the helmet, and he has no cigarette in his mouth. When we see the shot from outside, he does. (00:03:10)
Tree House of Horror VIII - S9-E4
Continuity mistake: Homer arrives back at home after the blast. He closes the door, and the doorbell rings. He opens it to the mob wanting his skin. He hears his family alive behind him and turns to see them. The door is closed in this angle. The following shot, it's open.
He Loves to Fly and He D'ohs - S19-E1
Audio problem: When Sveltana says 'Love you' to Homer as he leaves the plane, she just smiles, but her lips don't move. (00:04:58)
Smoke on the Daughter - S19-E15
Continuity mistake: While Bart is sleeping, there is only one upright shoe on his nightstand. However, just as Homer wakes him up, a second shoe suddenly appears lying on the same nightstand next to the first one. (00:00:33)
Continuity mistake: When Homer wears the "Ralph 08" shirt, the first time the text appears with an apostrophe ("RALPH '08") and in a smaller size; later, in another shot, the apostrophe disappears and the text is shown in a much larger size. This difference is also seen on Bart's shirt. (00:16:21)
Blood Feud - S2-E22
Other mistake: When Moe refills Homer's glass with beer and hands it to him, it briefly disappears and then suddenly reappears. (00:19:01)
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)
Tree House of Horror X - S11-E4
Revealing mistake: When Bart tells Lisa, 'Must have given you super strength,' Bart's arm is not fully coloured red and partially takes the colour of the floor from the background. (00:08:25)
Answer: Willy referred to an encounter he believed he had with actual aliens, while Wiggum thought he was referring to the arcade game.