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: 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.