A Big Piece of Garbage - S1-E8
Continuity mistake: Most of the objects on the Mayor's desk disappear (e.g. the photograph, the lamp) when Professor Farnsworth starts to write his plan on it. (00:17:10)
A Big Piece of Garbage - S1-E8
Plot hole: In this episode the mayor says that New New York has been garbage free for 500 years, but in most other episodes there's been tons of it lying around on the streets. (00:17:45)
Factual error: When Bender is dipped in the baptismal oil the oil level in the barrel doesn't change; which it should because of the Archimedes Principle. (00:10:20)
Continuity mistake: During the Robot Devil's song, Fry and Leela are going down a slide. At the beginning and end of their verse, they are shown as being on the same slide. While they are singing, they change positions several times. (00:17:50)
Continuity mistake: When the everyone is singing and the Devil Robot is taking Bender down in the Lift, we can see that the back of the lift is grated in one close up shot, but in a far away shot it is a solid cube with no grate. (00:18:15)
Continuity mistake: The food cart dissapears once LaBarbara stops playing it. (00:17:20)
Continuity mistake: At the end of the episode, when Bender and the Countess Delaroca are hanging on to the escape pod, the diamond on the diamond bracelet the Countess was hanging onto changes position between shots.
Continuity mistake: In the intro, before the main titles, the Professor informs the crew that he's booked them on the maiden voyage of the Titanic. When Leela says "Looks nice," at the beginning of the "scary" Titanic montage, the right side of her shirt is undamaged. During the middle of the "scary" Titanic montage, it suddenly becomes torn.
Other mistake: After Hermes has limboed under the door he is being told off by LaBarbara. Amy is standing next to her but her nose is missing. From front on her nose is usually a half circle.
Continuity mistake: The spaceship Titanic, when seen from space and at the dock, has a yellow trim around it. However, when Bender and the Countess are parodying the scene from the 1997 film Titanic, the trim is white.
Continuity mistake: During the Titanic's naming ceremony, Zapp stands next to the ship, with the word "Titanic" in shot, just above the grey part of the hull, very low down on the ship. However, during the rest of the episode, the word "Titanic" is located further up, just below the white trim.
Continuity mistake: Zoidberg holds the airlock open with his claw while lying on the floor. As the door lifts up and opens Zoidberg is stood up and first through the door.
Other mistake: Bender wears a magnetic bow tie. However in series 1 episode 2 it's shown magnets screw up his circuits and make him sing songs. It's mentioned in a previous entries correction that it's only when the magnet is near his head. This isn't true as it's shown in others episodes that it happens when a magnet is attached anywhere on him.
Suggested correction: It's strong magnets near his head that mess up his inhibition unit. The bow tie is a very weak magnet.
Continuity mistake: As Gunter is crying in the dorm, the number of bananas change between shots as well as the position of them on the floor. The changes are most notable when Fry approaches Gunter in the room.
Continuity mistake: Whilst Fry, Leela and the professor are on the log near the waterfall they are very close to the right side of the river. A few shots after Gunter puts the hat back on his head you can see they and the log are now all the way over to the left side of the river.
Deliberate mistake: In the dorm room, Fry's punch cup appears out of nowhere. [According to the DVD commentary, this was done on purpose.]
Continuity mistake: In the scene where Fry and the professor is trying to make Gunter choose between the banana and the hat, the distance between Fry, the professor, and Leela changes noticeably between shots. First Fry and the professor are wide apart with Leela behind Fry. Then after Leela hears the robot-house's boat approaching, they're all suddenly down by the lake standing next to each other.
Continuity mistake: When Gunter is trying to figure out where the hat goes, the banana disappears and reappears between shots. When Gunter finally figures out the hat goes on the head the banana is nowhere to be seen, yet when he needs it to do some calculations the banana is on the ground right next to him.
Continuity mistake: In the clip before Fry knocks Fox off the air, the one person says, "Could you repeat the last part? *pause, cut.*" When we later see it broadcast on Omicron Persi 8, it says, "Could you repeat that last, *cut*."
Continuity mistake: When the filming of the fake TV show begins, Fry says "Lights." and Bender dramatically opens his chest cabinet to display a large stage light. The camera cuts to Fry, who says "Camera one." and then the camera cuts back to Bender, whose chest is now closed again. There wasn't enough time to shut his chest between the shots and we would have heard it anyway, given the amount of noise the stage light gives off.