Audio problem: Just as McClane and Farrell are about to leave the Eastern Power Hub, Farrell goes on a long rant and his mouth does not match the words he is saying. [In the unrated version of the film, the rant concurs with Will's mouth movements, but the mistake is valid for the regular version.]
Audio problem: Before they leave for Mission City, Lennox tells Keller, "Sir, you gotta figure out some way to get word out..." Then in the next shot, as Lennox shouts, "Let's move!" his mouth stays open - not forming the "m" with his lips to produce the word "move", which we hear very clearly (it looks as if he really said, "Let's go!"). Changes in dialogue are done during ADR and often are not in sync with mouth movements seen onscreen. (01:45:45)
Audio problem: When Damien Blade shows up at the end, he shows up on a motorcycle close to the crowd, right on the main road, yet there's no sounds of a motorcycle pulling up before hand. They would definitely have noticed him pull up and hear his motorcycle coming in way before he stepped off the bike and the crowd parted way.
Audio problem: In the scene where Davey Jones is playing his organ, the sound is backwards to the way it should be. When he hits the lower notes, the sound emitted is actually *higher* than when he hits the higher notes.
Audio problem: When the Fantastic Four first meet Victor Von Doom, Doom says, "Now let's be clear about this, shall we? I hate you". In the next shot, his head is seen from behind, but if you look closely, you can see his jaw and face moving as if he were talking, but nothing is heard. (00:45:00)