Visible crew/equipment: As Zeebo is kissing Tanya, the device used to make his ears wiggle is briefly visible.
Continuity mistake: When Valerie picks up Ted's LPs, the cover of one of his speakers is missing, but in the shot where Valerie is lying on the couch tossing them into the fire, both speakers have covers.
Continuity mistake: In the car, Candy is spraying on hairspray with one hand and her other hand is styling her hair. In the next shot, the previously empty hand, which was styling, now has a pink mirror in it.
Continuity mistake: At the beauty shop, the little purple bows on Candy's red tank top disappear.
Visible crew/equipment: At the beginning of the movie, they show the aliens in their spaceship. Mac is suspended in a hover-bed, but you can clearly see the black wires holding him up.
Visible crew/equipment: In the scene where the car gets stuck in the giant donut, the thick black steel bars holding the car in the air can be seen in the back.
Continuity mistake: When the aliens first spot Valerie, she's first lying in the lounger, then she's on her stomach. She's then removing her bikini top. As the ship comes to Earth, she's suddenly back on her back, and the bikini top is back on.
Continuity mistake: When Zeebo and Wiploc crash through the fence and are now facing the wrong way on the freeway, we see 3 cars pass before they go into reverse. In the next shot, we see the rear-view mirror and it's 3 completely different cars. (00:19:00)
Revealing mistake: In the scene when the aliens first enter Valerie's house, Mac and Zeebo find the fish tank and eat one fish each. The shot turns to Valerie's stunned reaction then back to the aliens, who are smiling widely, pleased with their stunt. If you look at Mac's teeth, you can see they are bright white up to his first molar, which is a give-away at his fake white fronts.
