Continuity mistake: During the battle at the convent, one of the Cardinal's guards takes aim with his matchlock musket, is shot by Portos, and falls - along with his gun - into a hay wagon. But if you watch the falling scene closely, it is evident that only the man ends up in the hay; the gun should have fallen some place to the left of the wagon.
Continuity mistake: When Eve is making a special treat and it starts on fire. She sprays a fire extinguisher onto it. It shows foam covering only one side of the food. Then, it shows the food again a few seconds later and it is completely covered. (01:01:50)
Continuity mistake: When evil Swan hands the contract to the Swan who's about to kill himself, Swan grabs the contract out of E.S hands, yet in the next shot, E.S is still holding it.
Continuity mistake: Right after the train is hijacked by Robert Shaw at 28th Street station, there are 2 additional hostages in the front car (for a total of 19) that disappear after the train is hijacked between 23rd Street and 28th Street.
Continuity mistake: As Pinback puts the fruit down in front of the alien, its feet and spots change position. (00:28:50)
Continuity mistake: During the scene at the airport when the tower OK's the plane to land we can see it is a 707 with TWA-like colors of red and white. Then when there is the shot of the plane on the ground it turns into a DC-8 with orange markings. When the plane takes off into the air the camera shows the 707 again.
Continuity mistake: When Jim and Mike are in the car discussing his split form the Stray Cats, the camera is looking through the rear window showing that they are about to be overtaken by a blue car. But when the camera angles changes to the side window, they are overtaken by a red truck and the blue car has disappeared.
Continuity mistake: Blore is reluctant to admit his guilt. He stands up but the Judge bangs his cane angrily on the floor and Blore sits down again. The candles in front of the Judge have a different length between shots. (01:07:40)
Continuity mistake: When the boy stabs the man in the back with an ax while they're chopping firewood, the position of the ax changes between shots. In the first shot, the ax is vertical because the boy is behind the man. In the next shot, the ax is horizontal as if the boy is on the right side. (01:06:53)
Continuity mistake: Nini's mother fishes the telephone out of the bathtub. A naked little boy prances around the room and Christian De Sica is in a quite recognizable position, leg up scrubbing the sole of his foot. Cut, and De Sica is now simply sitting in the tub as if nothing happened. (00:22:00)
Continuity mistake: When Sid is changing the wheel on the van, there is a green Mini traveller parked in front of it which disappears between shots.
Continuity mistake: Gene Hackman returns a second cookie to Harrison Ford's dish that he hadn't taken - or perhaps it's the same cookie he picked up and returned a moment earlier. Either way, the cookie had suddenly appeared in Hackman's hands going from one shot to another. (00:30:35)
Continuity mistake: In the opening scene, Irwin Ingham's big scarf is wrapped around his neck in ever-changing fashion as it can be spotted looking at the striped area being at different height each time. (00:03:40)
Continuity mistake: When Julie places the tarot cards on the desk, the card labeled XVI is placed against the edge of the desk. A close-up of the XVI card is then shown, but the edge of the desk cannot be seen. (00:16:25)
Continuity mistake: In the film Sam Waterson, Nick Carraway, goes to his first Gatsby party wearing white pants, a blazer and a striped tie unlike all the other men who are dressed in tuxedos. Later in the film attending another Gatsby party Carraway is wearing a tuxedo like everyone else. Yet, during a dance sequence in which several partiers are dancing the Charleston, we see Carraway appearing on the left side of a shot dancing while wearing the white pants, blazer and striped tie he was wearing at the first party.
Continuity mistake: When Buster and Billie are at Slim Mim's Jamboree near the end of the film, Buster is wearing an open-collar shirt. When they step outside to get some air, it changes to a button-down shirt and tie.