Corrected entry: When Leela and Fry find Bender in the sewer, he doesn't have his head on right and one of his legs and an arm is attached in the wrong place. He says that he can't put himself together properly because he threw away his instruction manual. In every other episode he can reattach his head, legs or arms with no problem.
Corrected entry: Master Ffnog could not have possibly put on that full body suit and connected it up to the TV in the time that elapsed from when he talked to Leela to when the bell rang to start the battle.
Correction: The robot probably has some basic AI of its own, enough certainly to walk into the ring and punch Bender, giving Fnog time to get into the suit and control him for a real show of pummeling and skill.
A Bicyclops Built for Two - S2-E13
Corrected entry: After everyone finds out that Alkazar is really a shapeshifter, Leela makes a comment about him having a small you-know-what. At that point it shows everyone at the wedding "Whooing", and Fry does it about 1 or 2 seconds after everyone stops. However, his mouth doesn't move when this happens.
Correction: Fry's mouth doesn't move because it's the professor going longer than everyone else, and the animation of the professor matches.
Why Must I Be a Crustacean in Love - S2-E9
Corrected entry: When Fry and Zoidberg are fighting in the ceremonial tradition of Crawplah. Bender asks Fry to go down in the 9th round. If he wanted Fry to survive that long, then, why was he trying to blind him with the suns rays to give him a disadvantage at the very start of the fight?
Corrected entry: The Professor tells Fry that in the future they've done away with concepts of modesty and proceeds to walk around naked most of the show but when he sleeps with Mom they both pull the sheet up when the gang burst in and the Professor walks around with a sheet wrapped around him, as does Mom.
Correction: Professor Farnsworth is also the ONLY one to claim that modesty has been done away with and to walk around naked. This is most likely something that only goes on in the Professor's brilliant but slightly foggy mind.
My Problem With Popplers (a.k.a. The Problem With Popplers) - S2-E18
Corrected entry: When Luur announces that they will eat 'the first earthling' who ate one of their young, he announces that it was Leela. Leela isn't an earthling.
Correction: Yes she is. It is revealed in season 4 that she is in fact a mutant and therefore technically an earthling. She didn't know it at the time, but it had been hinted at in previous episodes.
Corrected entry: How could Zapp and Kif get fired from their jobs if they theoretically, along with everyone else, have a PERMANENT career chip planted in them?
Correction: They are chips that assign you to your permanent career, not permanent chips that assign you to a career. Leela demonstrates that the chips can be removed when required - such as when someone is dismissed from their jobs.
Corrected entry: When everyone is floating towards the waterfall, the rock that saves them appears out of nowhere.
Correction: You can see it in the other shots, especially when Bender and the rest of ERR go over the edge. Its just a little below the water-line so you can't see it from water level.
Corrected entry: When Bender in with the other robot he is wearing a bow-tie that is magnetic. During the second episode he tells the rest of the crew that magnets make him sing show-tunes. Wouldn't he want to avoid having a magnet on him?
Correction: Bender is only affected by magnets when they are placed on or near his head.
Correction: However in every other episode Bender is only reattaching one specific limb or his head - in the sewer he had to reattach all four limbs plus his head, a much harder proposition.