The Honking - S3-E1
Audio problem: After they have welded Bender to the wall Leela and Fry leaves. When they go outside the door is closing. It cuts and we hear the door close but we can see the door is already closed. (00:11:45)
The Honking - S3-E1
Audio problem: When Leela welds Bender to the wall, she uses a gas torch. The sound effect is that of an electric arc-welder.
I, Roommate - S1-E3
Audio problem: When Fry and Bender are pushed out of the door on a couch, you hear Hermes say "We'll bill you for the couch," but his lips don't move. (00:04:30)
Audio problem: When Bender is begging for Leela's help she refuses. When she says "I don't know, but I'm not helping" she grabs the TV remote control and you can hear her clicking on it. But her finger doesn't click the button until the next shot. (00:14:00)
The Farnsworth Paradox - S5-E10
Audio problem: When Hermes says "If I know parallel Hermes-1, HE'S IN THE SUN BY NOW!" and when Amy-A says "Is it a kind of hairspray?" their mouths don't match what they are saying.
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]