Continuity mistake: When Fry comes into the kitchen while Leela is making toast, he walks over to the cup rack to take a cup. When it cuts, the rack has changed position on the wall. (00:06:20)
The Farnsworth Paradox - S5-E10
Continuity mistake: In the very beginning scene, where Fry and Leela are talking, there is an explosion. When some ceiling falls down there is one big bit and three small bits next to Leela's foot but then a few seconds later there is one big bit and a few small bits all in different places. (00:00:40)
Fry and the Slurm Factory - S2-E4
Continuity mistake: When Bender and Fry are in the 7^11, the poster of Slurms Mackensie has it's teeth showing, but then his mouth is open with no teeth. (00:05:50)
Continuity mistake: When Lucy Lui shines the projector at the evil Lucy Lui you can see the movie running. How is that possible if the projector is not pointed at the screen?
Continuity mistake: When Fry has a bite of his pizza slice, the pizza slice change size between the shots. (00:20:30)
Continuity mistake: When Leela throws the harpoon at the boot, the angle where the harpoon hits the boot changes between the shots. (00:03:15)
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: When Bender and Flexo are fighting, Leela fires a shot at the roof and some bulbs fall down. The bulb's positions change between the shots. (00:18:25)
The Honking - S3-E1
Continuity mistake: When the Robo Priest opens his chest plate filled with dust to fill Bender's uncle's grave, no one is standing behind him. When it cuts Zoidberg and Hermes is standing right behind him. (00:03:00)
Put Your Head on My Shoulder - S2-E10
Continuity mistake: When Bender says "She's well travelled" about Fry's date, Fry is leaning his arm on the table. When it cuts it's off the table. (00:16:20)
Continuity mistake: The crack on the balcony suddenly appears once Bender yells at the people in the room. (00:17:40)
Continuity mistake: When the crew and Bender are sitting on the couch, Bender says, " Oh, oh, oh! get ready for this part!" Note the vent behind him is missing the three lights that have always been on it. (00:13:25)
Fry and the Slurm Factory - S2-E4
Continuity mistake: When they first see the keep out door in the Slurm factory there are some bricks by the door, the next time they see the door the bricks are in different places and different assortments.
A Bicyclops Built for Two - S2-E13
Continuity mistake: When the professor hits the button on the keyboard to send them online with AOL there are some items on the table beside the keyboard. When it cuts the items are gone. (00:01:00)
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.
Continuity mistake: Just before Leela unhooks her bra, she drops her singlet on the floor. The singlet she drops is a pale orange colour, matching her bra, but Leela's singlet is white.
Continuity mistake: At the end when Bender and Fry are polishing the ship the foam on the ship differ, disappear and reappear between the shots. (00:20:35)
Continuity mistake: When they are looking for the stolen atomic tiara, Fry is looking through Leela's drawers. At first the panty on top is pink. When it cuts it's blue, then pink again later in the scene. (00:14:50)
Continuity mistake: When Fry starts watching one of his old videos, all the objects that were on the floor in the previous shot disappear. (00:10:55)
Anthology of Interest I - S2-E20
Continuity mistake: When giant Bender dies, Fry is standing on top of some concrete saying "Good night, sweet prince." When it cuts, both Fry and the concrete are gone. (00:06:55)
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]