Continuity mistake: When Homer and Marge are in bed Marge moves up and we can see she isn't wearing anything, but in the close up you can see that she is wearing her pyjamas - note the thing around her neck, then it's back to nothing.
Homer's Barbershop Quartet - S5-E1
Character mistake: When Marge is making a model of Homer for Bart and Lisa, she makes him bald with his hair round the back of his head as we all know it, but at this point in the story Homer was not yet bald. (00:18:15)
Revealing mistake: When everyone is cheering for Ned at the neighborhood watch meeting, Apu's hand is yellow.
Revealing mistake: When Homer is on the news talk-show talking to the cat burglar, he puts his hand on his chest and the opening of his shirt appears over his hand.
Revealing mistake: When Homer pushes the soda vending machine next to the candy vending machine, a large scratch appears near the upper right corner of the screen. (00:04:10)
Suggested correction: This is in the questions as well. With the long amount of time the artists have to make an episode it's very hard that something like this would get by them. It's probably the device you watched it on.
Cape Feare - S5-E2
Continuity mistake: When Bob has finished singing the score of the H.M.S. Pinafore, an English flag comes down. But when he draws his sword to kill Bart, the flag is gone. Where could it have gone? (00:19:50)
Continuity mistake: When Barney becomes his old self again at the training center, he gets on a jetpack while holding a bottle. In the next shot while he is in the air, the bottle is gone.
Cape Feare - S5-E2
Continuity mistake: When the Simpsons get out of the car at Terror Lake, there are no rakes on the ground. When Bob gets out of the car, there is a whole stack of them. (00:14:30)
Continuity mistake: When Homer is in Moe's, Moe pours him a full pint. When it's passed to Homer, it's now 3/4 full in the glass. (00:10:40)
Continuity mistake: At the start, Homer has his feet on the floor until Ruth asks for a sander, and one suddenly appears under Homer's feet. (00:02:30)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: In Terror at 5 1/2 Feet, as Bart is being stretchered away, he is sat up on the stretcher, but when Skinner says, "perhaps a life at the mad house..." Bart is now lay down. (00:14:05)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: In Terror at 5 1/2 Feet, just as Millhouse is getting ready to move seats, he's sat with his hands in his lap until the shot changes, and then he is holding a red book. (00:12:00)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: In Terror at 5 1/2 Feet, the size of the notepad above the phone changes several times. (00:09:30)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: In Terror at 5 1/2 Feet, when Bart gets scared by Homer, there is a spare bowl on the table right next to his. When the shot changes, this spare bowl has disappeared. (00:09:30)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: In Terror at 5 1/2 Feet, Bart throws his spoon when Homer blasts the air horn. When the shot changes, the spoon has reappeared in the bowl. (00:09:30)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: In Terror at 5 1/2 Feet, Bart has a nightmare and walks into the kitchen, and there is no bowl in front of him. When Lisa speaks, a bowl appears in front of Bart. (00:09:10)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: When Homer is being taken to hell, his position in the floor keeps changing. Note the tile patterns. (00:03:40)
Tree House of Horror IV: The Simpson's Halloween Special IV - S5-E5
Continuity mistake: When Homer finishes his donut, the number of bits of paper on the fridge changes from 3 to 4. (00:03:20)
