Tree House of Horror X - S11-E4
Corrected entry: Just after the Simpson family have been chased by Ned in the car, Homer pokes Ned in the eye with a twig and it makes a squishy noise indicating Homer has poked his eye, even though Ned is wearing glasses.
The City of New York vs. Homer Simpson - S9-E1
Corrected entry: Homers watch keeps disappearing and reappearing between shots throughout the whole episode.
Correction: That mistake is already listed.
Corrected entry: This is for the Season 17 episode 'Marge's Son Poisoning'. Principal Skinner says that he and his mother have been doing karaoke together since he was in the 4th grade, but in the Season 9 episode 'The Principal and the Pauper', it was revealed that the 'Seymour Skinner' we know is an impostor, a man who assumed his army sergeant's identity after he was killed in combat.
enter_a_uhCorrection: Skinner (or Armin Tamzarian, if you want to be totally truthful) has been telling lots of stories about his childhood with Mrs. Skinner. It doesn't mean that the stories are true, but he tells them to gain credibility for his role as Seymour Skinner.
TwotallTrue. Even in the episode "The Principal and the Pauper", the judge told everyone to forget anything happened.
Plus there is nothing to say the real Skinner couldn't have told Armin stories from his youth.
Ssiscool
Radio Bart - S3-E13
Corrected entry: When Bart talks through the microphone after pulling it out of Santa's Little Helper's mouth, he talks in the exact same voice as Todd Flanders. (00:14:45)
YoshiCorrection: Bart is impersonating a young boy (not necessarily Todd Flanders). He doesn't use his normal voice during the whole prank.
The Springfield Files - S8-E10
Corrected entry: Mulder and Scully refer to the alien as a UFO (meaning unidentified flying object) yet said alien never actually flies.
Correction: Character mistake, not a television show mistake.
Matty BlastTree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When the aliens land in Springfield, the number and positions of the crowd in front of the Jebediah statue change between shots. (00:06:20)
YoshiCorrection: There are various different shots from different angles, it's impossible to tell if the crowd is really changing.
tw_stuartTree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: When Homer, Bart, Lisa and Maggie are eating candy, they eat and eat without taking the wrappers off. (00:01:50)
YoshiCorrection: We never see any of them eat candy with the wrapper on.
tw_stuartTree House of Horror II: A Simpsons Halloween - S3-E7
Corrected entry: At the beginning, when Jimbo and Kearney take Homer's candy, the door knocker is gone in the first shot. There is also a peephole on the inside of the door, and is never visible from the outside. (00:01:05)
YoshiCorrected entry: We know that Apu's store is spelled "Kwik-E-Mart," but in this episode, when Bart had the 3-D layout of The Town, it says "Quick-E-Mart."
Correction: Bart might have believed it was spelt Quick instead of Kwik. It sounds the same and most kids when they learn to spell are taught to spell as it sounds, so that might have lead to Bart not thinking it was a mistake. It was only a small display for plan of attack.
Lummie As a regular customer at the Kwik-E-Mart, I'm pretty sure that he would know how it was spelt.
There's No Disgrace Like Home - S1-E4
Corrected entry: When Homer hits Barney in Moe's he says "here's five you haven't met" meaning his fingers. Only problem is all The Simpsons characters have four fingers.
Correction: They probably did this for a joke.
Also, later on in the series, Lenny and Carl ask why it's called a high five when they only have 4 fingers.
Lisa's Pony - S3-E8
Corrected entry: When Homer falls asleep in the car, he hits the dashboard with his fist, and the airbag pops out. If you watch in slow motion though, he doesn't hit anything at all. (00:19:30)
Yoshi
Correction: When you see Homer poke Ned in the eye the first time, you can see that his glasses are pushed farther up his face.