Corrected entry: It takes two years for Marge's kitchen to be finished, but Bart and Milhouse are still planning their Playdude treehouse as if no time has passed at all. Surely in two years they would have either lost interest or finished making the Playdude treehouse? It only takes them a few weeks to get it up and running once the kitchen is finished.
Corrected entry: This concerns when Bart is in the ghost town, watching the robotic can-can dancers. When the four dancers first come out and start their kicks, one loses a leg which goes flying out of the window, breaking it. However when the camera cuts back to the dancers they all have both their legs.
Corrected entry: Lisa says that Jebediah Springfield is indeed Han Sprungfeld because there's no record of Jebediah Springfield before 1795. Yet in "Whacking Day", Bart mentions that there is a historical record of Jebediah Springfield serving in the Battle of Ticonderoga in 1777.
Corrected entry: During the "Who Shot Mr. Burns" alternate ending with Smithers shooting Mr.Burns, Smithers is smartly dressed and wearing his jacket. At the end of part 1 and start of part 2, Smithers was badly dressed. Carl also points out at the end of part 1, that Smithers left his jacket on his chair after the town hall meeting.
Corrected entry: Creator Matt Groening's initals were initially in Homer Simpson's hair and ear from the side. Matt Groening says himself (in one of the Simpsons comic book specials) that he changed it because it would be too distracting if the secret ever got out. He also says that he puts them in now only when he is drawing pictures for fans.ShooterMcGavin34
Corrected entry: After Homer gets his job back at the plant and returns home to complain to a pregnant Marge about how much he hates his life, a picture of Maggie can be seen hanging on the wall behind the couch - despite the fact that Maggie hasn't been born yet.Dandude776
Corrected entry: When Homer says that he is going to get Bart a birthday present, he runs to the car and drives away. Not only is it impossible for him to run out to the car, get inside, start the engine and drive away in the time he did, but he presumably used the back door (as we did not see him use the front door). Why didn't he use the front door? It would have been much quicker.
Corrected entry: Marge's real hair color changes throughout the show. There are some episodes that show her hair is naturally blue, such as ones with flashbacks that show her as a child or younger teen with blue hair. Other episodes indicate that her hair is really brown, but she dyes it.