Audio problem: In 1943, a top secret Naval experiment went wrong and David was sent forward in time to 1984, with his friend Jimmy. In 1984, David and Allison, a girl fom the present day, are staying in a hotel room. David picks up the talking travel alarm clock and fidgets with it. Yet, in the shot of Allison the alarm clock is still on the nightstand between the two beds. Then as he puts the alarm clock back on the nightstand, in the shot of Allison, the alarm clock is on the nightstand even though we hear the sound of him actually placing the alarm clock down. (00:54:25)
Audio problem: After Charlie has set the mans feet on fire, her dad picks her up and carries her out the door. She says "I didn't mean it daddy," but her lips aren't moving. (00:11:50)
Audio problem: When Toxie is chasing Julie, Julie runs into a room, locks the door and puts a plank of wood to secure the door. As she does, she cries and whimpers, yet her mouth doesn't move.
Audio problem: When the nerds have their first party to impress the Tri-Lams, the first song that's playing when they are all sitting around does not match the equalizer on the stereo lighting wise.
Audio problem: When Sarah's mother is on the phone with her husband, she says, "I'm worried Dave, the fever's gone from 101 to 104," yet her mouth doesn't move. (00:02:30)
Audio problem: When Kate is behind the bar, and the Gremlins are drinking beer and smoking, Kate says "Just don't bite me." Her mouth doesn't move at all when this is heard. (01:11:00)
Audio problem: When the Archbishop says "How are you, Lenny?" to the Mayor in his office, his lips don't match what he is saying. (01:15:55)
Audio problem: Inoue drags a hysterically-laughing Yoshiko back to Aoki's car after they have sex, and he gets his pants wet. Once she is in the car, she is still heard laughing hysterically, but her mouth isn't open far enough for laughs that loud to be coming out. The laughs were likely dubbed in. (01:11:58)
Audio problem: When Sydney is listening to an American radio report during dinner, he says "I can't eat," but his lips aren't in sync with the words. (00:30:15)
Audio problem: When Nigel holds Linda back after computing class, Lucy mutters "Oh, shoot", but her mouth is saying "Oh, shit."
Audio problem: At the party when the dancer is approaching Rudy some of his screams don't match up to his mouth.
Audio problem: When the monkey walks to the cradle to calm the crying baby, in the wide shot the baby is crying out loud, then in the close-up he is totally calm, mouth closed, yet the crying is still heard.
Audio problem: During the McClure Whiplash fight near the end the sound of two of their punches happen before they even land.
Audio problem: The first motorbike cop killed by the ninja screams in agony with his mouth properly closed. (00:07:05)