Continuity mistake: Mrs. Robinson picks up the phone to call the police on Benjamin who has broken into her house but if you look closely she never dials the phone. (01:35:10)
Suggested correction: Since we never see the police come in, we're not for sure she actually called them as Mrs. Robinson is known to lie and manipulate. All we hear are tires screeching and as we see no police pursuing him, it's unlikely.
Continuity mistake: In the park scene where Paul's drunk and barefoot, Corie carries his shoes as she follows him back to their apartment. When they're in the apartment Paul has his shoes on, and Corie helps him take his wet shoes off.
Continuity mistake: When Andress is taken hostage outside the casino, watch the background to see the bouncer walk inside the Royale. Yet, when Sellers runs outside, the bouncer is outside again. (01:41:00)
Continuity mistake: When Charles Bronson steps out on the balcony of the nazi villa a second time (after having to hide), he drops his rope (to get on the roof), and when we see him from another angle, he drops it again.
Continuity mistake: Jim Dale and Anita Harris think that Barbara Windsor is going to jump off the roof and race across the road into the nurse's block. We see Anita Harris is wearing dark seamed hosiery as she runs up the stairs. A few minutes later she hangs down from the roof and the seams have disappeared from the backs of her legs. (00:59:00 - 01:01:55)
Continuity mistake: There is a scene when King Arthur is just starting the Round Table. All the knights are gathered and bow on their knees to Arthur and King Pelinor who ceremoniously holds the sword Excalibur. But King Pelinor doesn't arrive in Camelot until after the following scene (which is May Day). (00:37:00)
Continuity mistake: Millie's beads have a mind of their own. They do not stay in place even when she is standing still. Besides the funny scene during the title credits (when it is deliberate), and when Miss Dorothy registers, they also move during a scene when Millie displays her thoughts on Miss Dorothy's beads when the two of them go into the elevator for the first time.
Continuity mistake: In the scene in the bullring, Fathom is knocked down by a pursuing bull. We see black underwear under her dress after she falls down. She gets knocked down a second time shortly after and this time it has changed to white.
Continuity mistake: When JB talks to Ms. Jones on the intercom after talking to his wife on the telephone, he asks where the "You know" is. She says "It's in your top right-hand drawer." You can see him moving to his left.
Continuity mistake: In the scene where Max and Leo visit Roger DeBris, Karman Ghia instructs them to remove their shoes because of the white carpet, and they do so. In the next scene, Max and Leo sit down and you can clearly see they have their shoes on. (00:42:25)
Continuity mistake: In the final sequence, when Sharon Tate awakes from death as a vampire, she rises and sits straight up; but in the next shot, when she buries her teeth into Polanski's neck, she leans back in the sled's seat before attacking him.
Continuity mistake: During the food fight in the pie shop, Brenda gets hit by a pie, which leaves a mess on the side of her head but when she joins in the food fight her hair is clean. At the end of the fight, the pie has reappeared on the side of her head.
Continuity mistake: During the dinner sequence, Angela Douglas is handed a letter. She is seen holding it with her right hand, but when the man seated next to her asks "What is it, my beloved?" we cut back to Angela and she is now holding the letter with her left hand.
Continuity mistake: When Scott pulls into the gas station in beginning of movie the sign reads Heyward Oil but at the end of the movie when we see his drivers license it reads Scott Hayward.
Continuity mistake: Terry Thomas' name appears in the credits inside the green disc of the traffic lights. However, in this close-up the feet of the poor worker are absent. (00:04:50)
Continuity mistake: The Packard convertible stolen at the beginning can be seen with and without a rear window during the chase scene.