Continuity: At the start in the limo, when Argyle is listing all the features of the car, the bear is dead centre of the back seats. The very next shot is in the rear view mirror, and the bear's now over by the window.

Continuity: In the scene where Al asks John if he has any kids of his own, John pulls out his wallet with a picture of his family. He is holding the radio and the wallet, but when it cuts to John's "Jungle Gym" comment, both his hands are on the wallet. It then cuts to John again holding the radio and the wallet.

Continuity: When the blonde baddie is about to kill the man in the front desk, his fringe changes from neat and combed to slightly messy from one frame to the other.

Plot hole: When the terrorists shoot the armoured vehicle from high up in the building, the angle at which the rocket launcher is fired seen from inside the building is simply wrong for a target that is virtually directly below them. The angle shown would have hit much further away. This is true for both shots but more obvious for the second one.

Visible crew/equipment: When McClane is crawling under the long table, to get closer to hear the terrorists conversation, you can see the reflection of the camera operator's legs following along with him on the table base.

Visible crew/equipment: When Al goes into the lobby of the building, he walks over to a large reflective marble counter. If you look at this counter you can very plainly see the reflection of a large metal stage lamp hanging right over the actors' heads.

Visible crew/equipment: Everyone is surprised when Karl is alive at the end of the movie because he appeared to be dead when hanging by the chain that McClane had wrapped around his neck. However, if you look at the back of Karl's head during the entire scene, you can see the safety wire coming out of the back of his shirt that holds him up. No wonder he survived.

Continuity: Takagi is sitting on the chair facing the door of the room when he is shot. In the next scene, the same door is splattered with blood, yet the glass structure which should be splattered with blood should be the glass window behind Takagi, not the door which he is facing.

Audio problem: Just after Hans addresses McClane by his name over the radio, we can hear Powell say, "Better get ahold of someone at dispatch," but his mouth movements don't match what we hear.

Continuity: Even though there is no light shining on John McClane during the fight with Karl, there are several shots where it's obviously not Bruce Willis, but a stunt double.

Continuity: Takagi and McLane enter Holly's office and leave the door wide open. When Holly enters the room seconds later, the position of the door is different.

Revealing: Having leapt from the rooftop, Bruce has his feet planted on the window. As he then goes to push himself back in order to smash the glass with his gun shots watch the rope. Someone above has kindly held the rope out several meters away from the building in the next shot, allowing him to get a much bigger swing.

Continuity: At the end of the movie, Richard Thornberg is trying to interview John and Holly. Holly socks him in his nose and he is grabbing it in pain. The next shot, as John and Holly enter the limo, he is talking to a camera normally as if nothing happened, then the next shot, he is suddenly holding his nose again.

Factual error: The news reporter is listening to the police scanner, when Willis is heard talking, the channel lights that blink on the scanner are supposed to stop on the channel being used, but they keep flashing.

Factual error: Bruce Willis' character arrives in Los Angeles on Christmas Eve around 6 p.m.   There is no way we would see that beautiful golden sunset we see. During that time of the year, the sun would have set more than an hour earlier.

Continuity: When John and Karl are fighting and Karl reaches for the gun lying on the floor,   John legs it out of an open door.  Karl fires two shots the first hits John and the second sprays blood all over the door.

Continuity: At around 1:53, after McClane "kills" Karl by hanging him with the chain, Karl can be spotted at the top of the stairs on the right side as McClane is reloading his gun. Saw it on the BLU-RAY version of film.

Revealing: Bruce Willis jumps off the roof with the firehose. The hose hanger break off the wall and apparently gets stuck in the railings. The shot is very careless: slow motion shows that the firehose doesn't get stuck, but simply clings like a magnet to the top of the railings.

Factual error: When Willis kills the terrorist and throws him out the window onto the police car, the body lands on the windshield, and it shatters into little bits. The windshields on 80's cars were double paned with a thin, strong plastic between each pane, to keep them from breaking into little bits in accidents. Only the side and back windows would shatter like that.

Factual error: The shrink on the news refers to the Helsinki syndrome. This should be the Stockholm syndrome. Being an expert, he should know the difference, and there's no suggestion it's a deliberate oversight to imply a lack of knowledge.