Audio problem: When Michael bursts through the door at the hospital, Loomis fires his gun and Michael stabs him. He drops his gun on the floor and it makes no sound when it hits.
Audio problem: When the band starts to play the guitar solo doesn't match the guitar player's fingers or picking. (00:41:10)
Audio problem: When Kevin and his crew of thieving little people land in the Middle Ages, Randall informs Kevin that they made all of what's surrounding them, trees, shrubs, bushes etc. Kevin's reply is "Phew, that's not bad" He says this without opening his mouth. This was looped into the film later on.
Audio problem: When Eddie is talking to Karen in the pornography booth, while the film is playing, what he is saying frequently mismatches his mouth movements. (00:10:05)