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)
Anthology of Interest 2 - S4-E3
Continuity mistake: When the Professor first stands at the podium, it has two decorations – one is two concentric circles, one is a C inside a circle, like the copyright mark. Later, it is two identical designs – two concentric circles.
The Honking - S3-E1
Continuity mistake: When they find Bender on the ground after being hit by the were-car Fry asks if any of them have any liquor you see all of them reaching out a bottle of liquor. When Bender grabs one of the bottles it cuts and you see all of them standing back as if none of them were handing him anything. (00:06:25)
Continuity mistake: When Cylon and Garfunkel are singing "Scarborough Fair" note that when you see them from the front there is one microphone, but when viewed from behind there are two.
The Day the Earth Stood Stupid - S3-E7
Continuity mistake: When Nibbler closes the door to the spaceship you see some of Leela's hair stick out. When it cuts her hair is gone. Then later it appear again. (00:06:50)
Anthology of Interest I - S2-E20
Continuity mistake: When the army start shooting at giant Bender, Fry runs out to stop them. In the close up of Fry, Bender disappears.
Anthology of Interest I - S2-E20
Continuity mistake: After the professor has been killed Hermes is going through some files. The files on the table to his right change position between the shots. (00:09:30)
Put Your Head on My Shoulder - S2-E10
Continuity mistake: When Leela arrives at Bender's she grabs the "Dating Consulting" sign. In some shots it's not visible but in some shots it's right in front of her on the table. (00:14:20)
Why Must I Be a Crustacean in Love - S2-E9
Continuity mistake: When Fry and Zoidberg are fighting, Zoidberg slashes the "Z" insignia (a tip of the hat to Zorro) onto Fry's shirt, then adds a D and R. When Fry releases Zoidberg from the nutcrackers and addresses the king, his shirt is repaired. (00:18:15 - 00:19:15)
Xmas Story - S2-E8
Continuity mistake: When Fry looks up at the clock tower the display reads "04:26" which implies it is 4 in the morning, instead of before sunset. In addition, once he has climbed up to the top of the tower, the clock has no 0 before the time and simply reads "4:26". The zero returns right at the end of the episode, in a wide shot of New New York. (00:12:40)
The Cyber House Rules - S3-E11
Continuity mistake: When the doctor removes the bandages round Leela's head, Hermes and Amy change position.
Continuity mistake: When Fry and Bender are playing the chess looking game the horse lays its head on a red square. When it cuts its head is on a white square. (00:00:10)
Put Your Head on My Shoulder - S2-E10
Continuity mistake: When the door bell rings and Amy says "Come on in Gary" we can see there is nothing on the wall behind her. When it cuts a panel with three buttons suddenly appear. (00:15:40)
Continuity mistake: When Bender is making the cake, when he gets the ingredients from the fridge, there are a lot fewer items when the shot changes. (00:05:20)
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: When the pizza box says it's only been 23 minutes the face on it smiles with its mouth closed. When it cuts to Fry talking the face is smiling with its mouth open. (00:06:50)
Continuity mistake: During the chase after the concert we see Beck's tour bus in the mirror of the Combi. The word Beck in the front of the bus is the right way around. It should be reversed. (It is the right way around in other shots). (00:19:30)
Continuity mistake: When everyone is being scanned by the machine that determines who stays on Earth and who gets evacuated, the machine approves Amy, saying that they were in the same sorority and they do a "Sigma Beta" dance. In the first episode, Amy says that her sorority is Kappa Kappa Wong. (00:10:30)
Saturday Morning Fun Pit - S7-E19
Continuity mistake: Hermes begins to tie the thing around his neck. One half of the cloth is around his neck whilst the other half is on his shirt collar. He ties it and the half of the cloth around his shirt collar has gone to his neck despite never touching it. (00:06:35)
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.
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]