Revealing mistake: Near the end, right when "little wonders" starts, Lewis takes a moment to look at his future family, Lucille, Frannie, etc. When there's a closeup on Lewis, his memory scanner reveals a reflection of no one in the gym, except for Lewis, even though people are supposed to be standing in front of him.
Revealing mistake: After opening the door to the superman clone lab, Jimmy and Lois walk in with the light source behind them at an extreme angle. Yet their shadows are shown as if the light is right above them. It should be elongated from their front. (00:57:05)
Revealing mistake: The engineer is wearing suspender hardware to keep his work overalls in place. The bottom part is held up by T-shaped bars or button clips, or T-tabs, that are metal. As the engineer moves around in the video, you can see these bending and squashing as his character model moves, not behaving like actual metal tabs would as a solid piece. (00:00:05)
Revealing mistake: When everyone is cheering to Bender, you can see Fry on the right hand side of the screen wave to him twice. The second time he cheers, his hands move from the table to suddenly waving at Bender without any animation. (01:19:50)
Revealing mistake: After Homer knocks out the guard guarding the dome, Homer runs into the supplies shack. As he walks through the doorway, his right arm passes through it.
Revealing mistake: When the Cybernetic ghost says "There's no way to stop it," he moves his head a bit and you can see part of his neck piece is missing.