Continuity mistake: When Jamie Lee Curtis and Tia Carrere are fighting in the limo, their hands can be seen wrestling for the gun on the roof in one quick shot before that action actually happens.
Continuity mistake: When Tom Arnold introduces Arnold Schwarzenegger to the remote camera eyeglasses, Arnold sees his daughter stealing money from his jacket. In two camera cuts, the angle and width of the remote camera view changes, although the remote camera is stationary on the fireplace mantle.
Continuity mistake: When Harry gets in the Harrier, the aircraft's left forward nozzle is directed aft. In the next shot, the right forward nozzle is aimed down. The nozzles cannot be aimed in different directions. Additionally, the nozzles are aimed aft and down in subsequent shots of the same scene.
Continuity mistake: When Helen is on the couch with Simon, objects on the tables move around. Most notably, the books on the end table change position as well as which one is on top when the spies break in.
Continuity mistake: When Salim Abu Aziz slides through the intersection on the motorcycle, as he's being boxed in and before going into the hotel, the stopped cars change between shots. You see him stop near a white car with round, pop-up headlights, then in the next shot it's a different white car with inset square headlights. Then back to the first white car.
Continuity mistake: In the first scene in the Omega Sector debriefing room, after Francis leaves, the people in the background change too quickly between shots. Most noticeable, the man standing next the seated woman at the computer is gone and a woman from nowhere is in his place.
Continuity mistake: During the scene when Arnold is taking off in the harrier jet, the pilots hide behind a squad car. One pilot is holding his sunglasses. It switches angles and he no longer has sunglasses on. Then his hand moves and they appear as if they had fallen off and he was grabbing them. A few frames later they disappear again. If you look closely, it was obvious they were CGI'd in during editing.
Continuity mistake: In the scene where Harry discovers Helen is having an affair and he's walking across the road. Between the wide and close up shots his wedding ring appears in the close up shots and disappears in the wide shots.
Continuity mistake: When Harry, Helen and Juno are in the private jet, the amount of lipstick smear on his face changes between shots.
Continuity mistake: When Harry dances the Tango with Juno there's a wide shot of the place, in the immediate close-up two guards appear out of nowhere behind Harry.