Continuity: At the part where the helicopter is going to shoot out the elevator, if you look at the guns there is a pair of guns on the right and a gatling gun on the left. At the end of the scene the guns have magically switched places and the pair is on the left and the gatling gun is on the right.

Deliberate "mistake": In the sequence where Jack finds his friend, and then the cards he is holding counts down to the explosion. Jack runs out, and the house explodes throwing the cop car into the air. If you look close, you can see the piston that launches the cop car and then falls back down.

Revealing: When the man shoots a target next to Jack's second cousin's head you can see a shot of him pointing his gun. It is clear there is a pole supporting the gun.

Visible crew/equipment: In the car chase the second time Jack swerves because he is being shot at you can see the shadow of a cameraman on the floor.

Visible crew/equipment: When Jack first falls on to the elevator and is hanging on the side, you can see the reflection of the camera in the window.

Deliberate "mistake": Just before Danny enters the action movie, Jack Slater (Arnold) arrives at his 2nd cousin's house. Jack exits his car and jams his desert eagle pistol into his waistband. He then approaches the front door where he turns toward the camera to kick in the door. You can clearly see there is no gun in his waistband now. In the next shot he draws the gun from his waist.

Continuity: When Jack is speeding to get to the funeral at the hotel, he drives through the pond in front of the hotel. When the car goes in, it has the set of wheels it had throughout the film. When it emerges from the pond, it has a new set of white Cragers on it.

Continuity: When they are in the ambulance, Danny screams 'I said, turn around!' and draws his gun. The next shot shows the driver looking to the rear and getting scared by the gun. In this shot you can see by the window that the car is totally stopped, and some car with a yellow light is passing by them. But in the very next shot, the ambulance is stopping (you can even hear the tires) and there is no car with the yellow light to be seen.

Visible crew/equipment: When Jack is in the real world, and he's playing chicken with the bad guy, as soon as Jack drives off on the ground, you can see a set of wires leading to Jack's car.

Continuity: Jack's shirt does not have bullet holes, as he walks up the stairs on the way to his apartment, but in the previous scene his shirt had bullet holes, as he packed up his stuff from his desk.

Revealing: There is an obvious shot splice of the elevator reaching the floor with Jack on it and one without him. The position of the elevator changes ever so slightly and you can tell the difference in the light coming from the elevator.

Deliberate "mistake": In the scene where Jack rips the door off the cab, he first breaks the top hinge and enters the cab. In the next shot when he pulls the cabbie out of the car, the door is completely off and laying on the ground. A few shots later when Jack grabs the newspaper, the door is seen hanging again.

Visible crew/equipment: When Benedict snaps his fingers and the dogs form a pyramid to show how well they are trained - look at the dog's feet and you can see the rails that the dogs are standing on.

Continuity: When Benedict pulls Leo's finger at the funeral to start the timer on the wristwatch, you can see that the timer was pre-set for ten minutes on the upper part of the display and the countdown is in the lower part of the display. There are two more shots of the countdown on the watch. First at 3:32 left when Jack knocks out the doctor and then at about 30 seconds left over the tar pits. Both of these shots show that a piece of silver tape has been applied to the upper half of the display, probably to cover a lower starting count so they wouldn't have to wait 10 minutes between shots.

Visible crew/equipment: When it zooms into the man with a glass eye's sunglasses after he shot the target next to the man's head you can see the arm of the cameraman and a bit of the camera.