The Farnsworth Paradox - S5-E10
Continuity mistake: When Fry first takes the tangled Christmas lights out of the fake box, they are all red and blue. However, when the shot cuts outward to get a wider view, many of the lights have turned green.
The Farnsworth Paradox - S5-E10
Continuity mistake: Just as Hermes A is about to shoot the box into the sun, all the crew (A and B) shoot out into the airlock. However, Hermes B doesn't come out of the box and just appears in the pile. This is confirmed in the commentary.
Three Hundred Big Boys - S5-E11
Continuity mistake: Right before Leela dives into the whale tank, she drops her snorkel and mask, but when the shot pulls back, they've completely disappeared.
Three Hundred Big Boys - S5-E11
Continuity mistake: When Bender is being filmed stealing the cigar, we see the "robocop" showing the footage on his screen. In the wide angle you can see he has the siren on top of his head, then in the next shot it's suddenly not there. Then he actually raises it out of his head in the final angle.
Continuity mistake: When Bender is a "female" and is putting stuff in his locker, in one angle you can see a yellow item next to his pink handbag. Then in the wider angle, this item is gray.
Continuity mistake: Right at the end, Bender is smoking a cigar and says something like "Emotions should be hated." In the very next shot when he has stood up, the cigar has vanished from his hand and there isn't anywhere he would have put it down.
Continuity mistake: When Bender and the other obsolete robots are watching a snail crawl across the beach, the snail is shown to be in the center of the screen with the robots standing around. Cut to Bender inserting a CD in his mouth, it then goes back to showing the original angle, but the snail has suddenly disappeared, and not enough time has passed for it to have crawled all the way out of the shot. (00:12:10)
Continuity mistake: The "Cartridge Robot" never takes the "Introduction" tape out of his slot, but in the wider shot it's suddenly vanished.
Bender Should Not Be Allowed on TV - S5-E15
Continuity mistake: Near the beginning the Professor and Hermes are hitting something in a crate. Then Hermes puts down his rake and it then it disappears. (00:02:10)
Bender Should Not Be Allowed on TV - S5-E15
Continuity mistake: When Calculon is bathing in champagne with Monique there is a napkin or something behind her, but when the robot actor breaks down it is nowhere to be seen.
Bender Should Not Be Allowed on TV - S5-E15
Continuity mistake: When Bender is auditioning there is a cup on Calculons table that appears and disappears between shots.
Bender Should Not Be Allowed on TV - S5-E15
Continuity mistake: When Bender takes the Professor and the Network Executive's gun, in the close up he is facing the Professor but in the long shot he's facing the crew.
Answer: Yes Leela knew from early on that Fry had feelings for her. They were pretending to be a couple in 'A Flight to Remember' from season 1 and Fry tried to get on dates with Leela ever since. She just didn't show signs of the feelings maybe being mutual before some of the later episodes.
Andreas[DK]