Continuity mistake: After winning the demolition derby, one of the doors of the ship falls off, but when they get back to earth it's back on the ship. (00:09:15)
Continuity mistake: During the conference, when the Professor is talking to Leela, Hermes's shirt buttons are not visible but in the next shot, his buttons are visible. (00:11:55)
Continuity mistake: In the scary door, the hay stack on the barn it diagonal, but when the aliens are attacking, the hay stack is vertical. (00:13:30)
Continuity mistake: When Bender takes Nibbler's matter, the matter is not that big and it's the only matter he has in his compartment. Later when Doctor Perceptron goes to remove Bender's imagination, the matter can be seen through his compartment only now it is a lot bigger. (00:18:40 - 00:50:10)
