Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when Hugo ties up Bart on the table in the attic, you can see that Bart's feet are tied up by pieces of rope. But when Dr Hibbert walks towards Hugo holding a picture frame, the rope is nowhere to be seen.
Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when the family are speaking to Dr Hibbert, there is a picture of Bart as a baby on the wall behind them. Later on in the scene, it disappears, and when Bart is by the staircase, it is back again.
Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when Homer and Marge return home in the pouring rain, Homer puts his hat on the hat stand. But when Bart is speaking to his mother, look at the hat stand and you can see the hat has gone.
Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when Bart is speaking to his mother after she has put down the phone, you can see Bart's arms are crossed, but when viewed from behind in the next shot, he now has his arms by his side.
Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when Bart, Lisa and Maggie are in the attic, Bart picks up a book and on The Front cover it shows a picture of Homer with the words "Homer, I Hardly Knew Me" by Homer Simpson. But when we see Bart with the book in the next shot, The Front cover is now completely clear.
Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when Lisa and Bart watch their father go to the fridge, you can see the spoons in their bowls are pointing to the left, but after a quick cut to Homer getting the fish out of the fridge, we cut back to Bart and Lisa and the spoons are now pointing to the right.
Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when the family are having their breakfast, you can there is a cup next to Marge's bowl, but when Homer gets up from his chair to go to the fridge, the cup is now near the edge of the table.
Tree House of Horror VII - S8-E1
Continuity mistake: In "The Thing and I", when Bart and Lisa come out of their bedrooms at the beginning, their doors are only partially open but in the next shot they are now fully open.
Continuity mistake: After Milhouse explains to Bart how the warehouse collapsed, he appears to be bald for some reason.
Continuity mistake: During a shot of everyone at church, Carl is seen with a red sweater, after Homer says "Dammnit!", Carl's sweater turns blue.
Homer vs. the 18th Amendment - S8-E18
Continuity mistake: Carl and Lenny are seen at both Moe's and at the St. Patrick's Day parade, which are happening simultaneously.
Brother From Another Series - S8-E16
Continuity mistake: Reverend Lovejoy is standing behind Sideshow Bob during his speech, but in one shot, he is standing with the protesters, then back behind Bob.
Brother From Another Series - S8-E16
Continuity mistake: While Sideshow Bob is walking out of prison and towards the protesters, Carl's hair is red.
Continuity mistake: After Marge bites the candle down to a smaller size, the candle turns back to its original size for a frame.
Continuity mistake: During Bart's stand-up comedy routine, Dr. Nick is seen wearing his usual white lab coat, but in the very next shot of the audience laughing, he is not wearing a coat.
El Viaje Misterioso de Nuestro Homer (a.k.a. The Mysterious Voyage of Our Homer) - S8-E9
Continuity mistake: When Homer is freaking out and starting to hallucinate after eating a few peppers, Jasper is behind a tent stall when Homer is running away from Ned Flanders, but just seconds later when Homer falls to the floor, Jasper is in front of Homer. (00:08:05)
Grade School Confidential - S8-E19
Continuity mistake: Edna Krabappel's name on the envelope is misspelled as "Enda" when Bart is opening and reading the letter, but is spelled correctly when viewed in close-up.
Brother From Another Series - S8-E16
Continuity mistake: Sideshow Bob's seat belt is on in one shot but gone in the next when he has been released from prison.
Continuity mistake: When Lisa arrives at Dr. Nick's, amongst the wheelbarrow line is a Professor Frink (and he's not even first in the cue). However, just a few minutes later, when Lisa ends up in the mud pit, we can see Frink amongst the crowd.
Continuity mistake: During The Town hall scene, Ruth Powers (the woman with the red bandana) is seen with blondish hair in two shots. All other shots of her during this scene shows her with her usual brown hair.
Answer: Willy referred to an encounter he believed he had with actual aliens, while Wiggum thought he was referring to the arcade game.