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.
Futurama: The Beast with a Billion Backs (2008)
1 revealing mistake
Directed by: Peter Avanzino
Starring: John DiMaggio, Katey Sagal, Tress MacNeille, Billy West
Other mistake: When Fry and Colleen are lying in bed, his hand is around her shoulder but it is the same colour of Colleen's skin. (00:04:25)
Philip J. Fry: I'll miss you, Bender. You and your robots, take good care of Earth. Here. These are the keys to the Bermuda Triangle. Lock up when the world ends.
Trivia: After Bender makes a point with the organic eye, there's a picture of Robot B-9 from the Lost in Space TV series on the wall.