Continuity mistake: When Fry falls into the cryogenic chamber his whistle drops right next to the chair. When it cuts, the whistle is gone. (00:01:50)
Continuity mistake: When Fry first meets Leela, there's a panel on the wall beside him. It has one red button at the bottom. In subsequent shots it has two buttons. (00:03:50)
Continuity mistake: When Fry and Bender are in the museum and locked in the "Villains" room, Bender breaks the two girders in the window, when he turns around and says "Who I want!" you can see behind him that the girders are back in their original position. (00:14:10)
Continuity mistake: Near the end, when Leela talks to the second female blurnsball player, her black nose-stripe disappears then reappears throughout the shots.
Continuity mistake: When Fry is queueing for the booth, he opens the piece of paper, showing the picture and writing. Just before he steps in to the booth, it's changed colour and gone blank, then in the next shot it's back as before. (00:07:45)
Episode Two: The Series Has Landed - S1-E2
Continuity mistake: When Fry and Leela get to the moon landing site, Leela climbs in the moonlander hatch with the oxygen tank to which Fry's oxygen hose is connected. The hose is visible as it leads in to the hatch. When Leela pops her head out the hatch, the hose is suddenly gone. Then in the next shot, it's back, but lying underneath the hatch. (00:17:50)
Continuity mistake: In the first episode of season 6, "Rebirth", near the end after the real Fry comes out of the Rebirth chamber, the robot Leela says that she and the robot Fry are in love she now has the real Leela's mechanical arm device on. But she never had it before or after that shot.
Anthology of Interest I - S2-E20
Continuity mistake: When Zoidberg calls a meeting with the other planet express workers he says the clock stopped at 4:15. In one shot, however, the clock is at a different time.
Episode Two: The Series Has Landed - S1-E2
Continuity mistake: When Amy starts cleaning Bender with the pick, the space around Bender's eyes changes color and there are papers on the desk between his head and a pile of books. They disappear in later shots. (00:03:55)
Time Keeps on Slipping - S3-E14
Continuity mistake: In this episode, Fry loosens his helmet and his head expands immediately. But, in the first episode, a man on the Moon takes his helmet off for several seconds and his head never expands.
Episode Two: The Series Has Landed - S1-E2
Continuity mistake: When Hermes is handing over the "Standard Legal Release" to Leela there is a red pen lying on the sheet. When it cuts the pen is brown and is lying beside the sheet. (00:02:30)
Continuity mistake: When Fry and Bender are at the bar, the barman hands Bender a bottle of liquor. He takes a big swig of it, but the level in the bottle remains the same. (00:09:55)
Continuity mistake: When Leela, Fry and Bender are in Old New York, when they are all sitting down, after Bender gives Leela her ring back, she puts it on and then it disappears. (00:16:55)
Continuity mistake: When Leela is calling for backup outside the head museum (her call sign is 1BDI: One Beady Eye), her arm band switches from her right arm to her left. (00:11:15)
Continuity mistake: When Bender removes the bars from the cell, it leaves two small pieces of bar jutting out from the top of the window. When he bends another two bars to stop Leela from following them, the pieces are gone. (00:14:25)
Episode Two: The Series Has Landed - S1-E2
Continuity mistake: When the team are first seen having breakfast, Bender's liquor bottle disappears in one shot. Then when he takes a swig, there's no liquor in it and the label is blank. (00:01:45)
Episode Two: The Series Has Landed - S1-E2
Continuity mistake: When Amy lowers the magnetic hoist the keys get stuck under it. When the hoist gets onto the box the keys suddenly lie beside the hoist. (00:07:05)
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: When it's Nibbler's birthday, in a far away shot of Nibbler in his chair, the three balls on it are pink, but in the close up they are green. (00:04:20)
Answer: You are thinking about episode 20 of series 2 - "Anthology of Interest I". She technically never kills anyone, but in the episode she ask a "What if machine" (one of the Professor's inventions) what would happen if she was more impulsive. The machine then shows the more impulsive Leela killing off the Professor to get the money from his will and thereafter killing Hermes, Bender, Scruffy, Cubert, Nibler, Amy and Zoidberg to cover it up. Finally she does something really impulsive with Fry.
Andreas[DK]