Continuity: When Lenny is telling his story, his 5 o'clock moustache keeps changing from brown to grey.

Continuity: The bible that Reverend Lovejoy returns at the library is bigger in the first shot.

Continuity: When Bart says "Everybody, come quick!", the fridge door goes from open to closed.

Continuity: In this episode and maybe in other one, the door to the basement is at the entrance of the house, but that's a closet in other episode.

Revealing: When Marge says, "Slow and steady wins the race", her face and body are two different colors.

Plot hole: In "Starship Poopers," Kang always wears a glass thing on his head, but whenever Homer beats him up, it's gone.

Audio problem: At the end when Bart says 'Don't forget Ken Star' his mouth doesn't move.

Continuity: In the shot just before Alec gets hit by a tree branch, his watch is missing but in the next shot, his watch gets snagged on something.

Continuity: When Homer is shot at the hippie farm, he ends up with a flower in his head, stem first. But he put the flower in the gun barrel stem first, as well. From a shot at that close a range and that velocity, there's no way the flower could have turned around in mid-air.

Audio problem: In the beginning, we are at the power plant. We find out that Burns has packed his own lunch, and one thing he packed is a bullion cube. His mouth doesn't move right when he says "Bullion cube".

Continuity: When Lisa is in Principal Skinner's office, there isn't a scoreboard control panel on the desk, yet when there is an overhead shot of his desk, one suddenly appears.

Factual error: Homer's pet lobster, "Pinchy" is red. However, lobsters aren't red until you cook them. When they are alive they are brownish/black.

Continuity: When Lisa is daydreaming about her failed test, the president of Harvard talks to her. When he says, "Nasty business that zero", his right white sleeve turns the same color as the glass above the door.

Audio problem: At the theatre, when the cook talks to Mark Hamill off-stage he sounds exactly like Moe the bartender.

Audio problem: At the end, where Homer is carrying Mark Hamill out of the theater and Mark says, "Shoot, I forgot my Light saber", his mouth doesn't match what he says, and it keeps moving when he's quiet.

Continuity: The Springfield Isotopes win the championship at Springfield Stadium and it's daytime. But Homer and the guys watch the game live on TV at Moe's Tavern, and it is nighttime.

Continuity: When Homer tells Lisa who is going with him to the Super Bowl, he says Comic Book Guy is going. In the shot showing the people lining up, Comic Book Guy is not there. He then appears on the bus later on.

Factual error: At the end, when Homer and company are being carried out of the Super Bowl after the game, it is daylight. Usually, it is dark by the 4th quarter.

Continuity: When Homer is talking to the makers of Police Cops, the person on the far left's hair changes from brown to grey instantly between shots.

Revealing: After Apu and Manjula go by in horse and cart everyone returns into Moe's. When they walk in they just disappear into a brown wall which is where the inside of Moe's should be seen.