Continuity mistake: When the Ranger stops the Simpsons' car at the start of the episode, watch his "class ring". When he puts his hands inside the car it's on the left hand. However, the flies later eat his hand and take his ring, and it's suddenly his right hand they ate and took it from.
Continuity mistake: Lisa's Malibu Stacy dollhouse disappears from the rug after Maggie spells 'price' with her blocks. (00:03:55)
Diatribe of a Mad Housewife - S15-E10
Continuity mistake: At the book signing, Dr Marvin Monroe is significantly slimmer when seen from behind than when see from in front. (00:14:50)
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)
Continuity mistake: When Mr Burns draws the moustache and horns on the T.V. screen of Marge, they just disappear in the next shot when he starts to draw the bees. (00:19:30)
Sweet Seymour Skinner's Baadasssss Song - S5-E19
Continuity mistake: When Marge, Bart and Lisa are watching the videos at the beginning of the episode, the clock changes from one time to a completely different time between shots.
The Wizard of Evergreen Terrace - S10-E2
Continuity mistake: When Lenny is telling his story, his 5 o'clock moustache keeps changing from brown to grey.
Continuity mistake: When Bart is trapped in the coffin, the cables leading to the Cadaver Cam TV disappear then reappear. (00:04:10)
Continuity mistake: When the store is being robbed, Homer throws his bag to the side and it lands face down near the stand of chips Homer jumps into. But when they are watching the video of this incident later, the bag is standing upright, far away from the spot it previously was at.
She Used to Be My Girl - S16-E4
Continuity mistake: Lisa puts a statue of liberty head on it's side in her bed to make it look like she's in bed. But when Marge pulls back the covers the head is face up.
Continuity mistake: When Homer drives his car to work it is lime green instead of the usual purplish color.
Sex, Pies and Idiot Scrapes - S20-E1
Continuity mistake: When Homer has Snake cornered, the second rung on the ladder behind them is broken. In the next shot it's not broken, then it is again.
Tree House of Horror XII - S13-E1
Continuity mistake: At the show the school puts on in "Wiz Kids", when the Montymort Dragon is first seen in the cage, the cage has 6 bars at The Front. When Lisa says "Release The Dragon", the cage has 4 bars. When the cage door is being raised, it has 6 bars again. (00:18:45)
Life on the Fast Lane (a.k.a. Jacques to Be Wild) - S1-E9
Continuity mistake: Near the end when Homer is putting the colored ball things in the tube, right before Marge comes up behind him, the stripes on his tie switch sides for one shot.
Continuity mistake: By the vending machine, Lisa first points her card at the cell on the right, then there's a zoom on the cells and we see her hand starting to point again, but this time at the cell in the middle. In the next shot, she lowers her hand with the card, which however in this shot is pointing at the cell on the right again.
Homer And Ned's Hail Mary Pass - S16-E8
Continuity mistake: Homer is on The Front lawn when the bus of tourists turn up and Mario comes out. Homer gets mad and throws trash cans at Mario, who runs away and climbs up into the tree house which is at the side of the house, but it should be at the back.
Continuity mistake: When Marge is saying she would never have married Homer if she had known it was him in the camp, she is on the couch. But in the next shot, Marge is standing up and the cat and dog are on the couch.
