Revealing mistake: Meatwad and Shake get booted off the computer by Frylock so he can find instructions to the Insane-O-Flex. Watch the computer monitor. It rumbles, but the logo on it stays still.
Continuity mistake: In the scene where Henry is pouring the whiskey into the cups, the bottle is half empty when completed. Next scene Henry is nursing the bottle which is now almost full. (00:06:00)
Visible crew/equipment: Toward the end, as the two Species females are fighting, one jumps from an overhead beam. As she descends, the black safety cable for the stunt person is visible.