Corrected entry: In the opening sequence, Bart is writing 'I Did Not See Elvis' on the board. However, if you pause when the left column of writing is visible, the line second from the bottom on the left column says 'I Did See Elvis'.
Corrected entry: During the trial, the prosecutor shows the court several betting slips that Krusty's used. Right before this, Krusty revealed he couldn't read or write - how would Krusty have known what to write on the slips?
Correction: The betting slips could simply be the records that the betting agency took down of Krusty when he bet on events (e.g. In Lisa the Greek Krusty phones in his bet to Moe on the football and tells him to record a bet for Sideshow Mel).
There's No Disgrace Like Home - S1-E4
Corrected entry: Before Homer enters the pawn shop you can see the TV is a purple color. As he enters the store the color of the TV is now blue. (00:14:30)
Correction: This is done purposely because of the lighting difference between the outside and the inside.
Corrected entry: When Homer takes a chocolate lollie from the freezer at the Kwik-E-Mart, it is exposed (we see Homer eating it later without having to peel a wrapper). Wouldn't it be in a wrapper?
Correction: Not really,there's an episode where Apu is seen putting old hot dogs to sell.So why would Apu use the safety rules now?
The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1
Corrected entry: In the same shots as when the gift changes colour, Homer in the first one can be seen with bare hands then after he's on the ground it is obvious he's wearing orange gloves.
Correction: Homer is wearing orange gloves throughout the scene, including during his fall. The bare hands belong to Flanders.
The Simpsons Christmas Special: Simpsons Roasting on an Open Fire - S1-E1
Corrected entry: When you first see Patty and Selma, there is nothing connecting the beads on Selma's necklace.
Correction: Actually, if you look closely, you can see a thin string connecting beads, it's just not distinct enough on the yellow background.
Moaning Lisa - S1-E6
Corrected entry: During dodgeball, either Sheri or Teri is one of the kids throwing balls at Lisa. Only problem is, she is in Bart's class, not Lisa's.
Correction: It is quite possible that they have dodgeball at the same time.
Corrected entry: When Bart is about to bury the statue's head he says "ohhh" but his lips do not move.
Correction: Your lips don't have to move to say "ooooh" the way he was. It was more of a groan than anything else.
There's No Disgrace Like Home - S1-E4
Corrected entry: The logo in the pawn shop window looks different on the inside than on the outside.
Corrected entry: As Sheri and Teri are walking along talking to Bart, one of the twins' bodies disappears and her head seems to be floating in mid-air.
There's No Disgrace Like Home - S1-E4
Corrected entry: During the parts where you see the crowd applaud Mr Burns' speech there are two people on the bottom-left who swap skin colour.
Corrected entry: Marcia Wallace's name is misspelt "Masha" in the closing credits.
Correction: I just watched this episode and looked out for this mistake, and it is certainly spelled correctly.
Corrected entry: When they first get on the school bus, there is only one seat left, and that is the one next to the kid who later vomits inside the bus. But when Bart makes his way to that seat, you can see that he goes past one other kid who is sitting on his own.
Correction: If you keep an eye on that seat as Bart walks to wendel, you'll notice Mrs. Krabbappel sit in it. she'd hardly stand for the whole trip now would she?
Corrected entry: For season 1, in the introduction Lisa narrowly misses Homer on her bike, then lets it roll into the garage. If you look closely, you can see the bike disappear before the screen moves.
Corrected 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.
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.
Correction: This isn't trivia, its just Bart being, Bart. And also it isn't trivia if you have to pause to see it.