Nikolai

Lethal Weapons - S3-E7

Revealing mistake: When Peter runs across the dock after getting out of the boat, a large chunk of his body is missing.

Nikolai

Eternal Moonshine of the Simpson Mind - S19-E9

Continuity mistake: Near the end, when Homer says "I'm a genius", Krusty is seen with yellow skin, but is later seen with his usual white skin.

Nikolai

Dude, Where's My Ranch? - S14-E18

Continuity mistake: When Lisa goes to save Clara, she's wearing the same dress she took to the dance, but after Clara walks safely back to land, Lisa is wearing another outfit entirely, then changes back to her previous outfit in the very next shot, then back to her unknown outfit seconds later.

Nikolai

E-I-E-I-(Annoyed Grunt) - S11-E5

Revealing mistake: After Lisa says "For a product that's evil and deadly" while standing in front of the tomacco stand, there's a duplicate Lisa behind her that stands still while she moves, giving Lisa the appearance of having two heads. It looks like the animators made a mistake while trying to animate Lisa.

Nikolai

The War of the Simpsons - S2-E20

Revealing mistake: When Ned says "Crème de cassis" while describing what was in the drink he made. There are several animation errors in this shot. His head is disconnected from his body, and his nose disappears. Also, a part of his face is missing between his fingers while he does the 'OK' hand gesture.

Nikolai

The Day the Earth Stood Cool - S24-E7

Audio problem: When Homer says "Can I man hug you?", he mouths "Can I brother hug you?"

Nikolai

A Totally Fun Thing Bart Will Never Do Again - S23-E19

Audio problem: While Bart is in the communication center, the second time Bart says "Squirt!", his lips don't move.

Nikolai

Politically Inept, with Homer Simpson - S23-E10

Revealing mistake: Right before Homer is patted down at the airport, his facial hair briefly flickers yellow.

Nikolai

Politically Inept, with Homer Simpson - S23-E10

Revealing mistake: While Homer catches his underwear with his tongue after the Simpsons' clothes burst out of the suitcases, Homer's tongue briefly passes through his underwear.

Nikolai

The Man in the Blue Flannel Pants - S23-E7

Audio problem: When the woman on the DVD Bart is watching says "Are you sure you're Martin Scorsese?" her mouth is completely out-of-sync with her voice.

Nikolai

The Man in the Blue Flannel Pants - S23-E7

Audio problem: In the rafting scene, while Marge says "And maybe when we get home, we can ride down something else?" part of her dialogue does not match her mouth movements.

Nikolai

The Man in the Blue Flannel Pants - S23-E7

Continuity mistake: While Krusty is talking to his merchandising executives, after Krusty says "Get to the point, unless you want a face full of clown chunks!" part of his collar turns green.

Nikolai

The Food Wife - S23-E5

Audio problem: When Homer, Bart and Lisa enter E4, when Homer says "Wow", his mouth doesn't move.

Nikolai

Bart Stops to Smell the Roosevelts - S23-E2

Audio problem: During Superintendent Chalmers' flashback, when he says "So, you are the so-called Breakfast Club?", his mouth movements don't match his voice.

Nikolai

Moe Letter Blues - S21-E21

Continuity mistake: In Apu's van, one of the octuplets on the left is wearing blue pyjamas while the lullaby is playing, then changes to pink pyjamas after Apu takes the disk out.

Nikolai

Moe Letter Blues - S21-E21

Revealing mistake: When Homer is riding Barney like a bull at Moe's, there are duplicates of Sam and Larry (the barflies) in the same shot.

Nikolai

Saturday Morning Fun Pit - S7-E19

Revealing mistake: Near the end of the "Bendee-Boo" segment, while everyone is laughing, one of the Harlem Globetrotters' (between Amy and Leela) right arm keeps disappearing and reappearing several times in one shot.

Nikolai

The Blue and the Gray - S22-E13

Audio problem: When Homer says "Drive my kids to school?!" his mouth is out of sync with his voice.

Nikolai

How Munched is That Birdie in the Window - S22-E7

Continuity mistake: Right before the Itchy and Scratchy Show episode starts, Santa's Little Helper is colored in a much darker shade of brown than usual.

Nikolai

The Bob Next Door - S21-E22

Audio problem: When Marge says "Now that it's empty, who's going to buy their house? What if someone moves in with two Barts? Or four teenage Barts?" her mouth movements don't match most of her dialogue.

Nikolai