Revealing mistake: When Leela brings soup to Zap and Amy in bed. Leela is wrapped up by a tentacle. The animator forgot to erase the lines of the tentacle as it overlaps. A huge graphical error can be seen.
Continuity mistake: In the suicide booth, the floor drops from under Bender. After it does, and Bender starts to drop, his arms are crossed, and his head is just above the level of the floor. A second later, he's back up, dropping, and his arms are flailing about.