Revealing mistake: Near the start of the film, when Lt. Harley is watching his love interest show off by doing gymnastics on the tree limbs, several times you can see the actual pole she is swinging on, not the tree limb. (00:08:50)
Revealing mistake: When Robin crashes through the stained glass window to save Marian and fight the sheriff, the panes of glass flutter in the breeze, revealing it to be fake glass.
Revealing mistake: Towards the end when Vanilla Ice jumps the motorcycle over Nick's car, you can see the ramp he used through the car's windshield.
Revealing mistake: When Dani goes to meet Cort after dark to go swimming, you can plainly see it's daylight out because the sun is shining.
Revealing mistake: During the beginning, as the newspaper headlines roll, the small text in the articles is actually the same text repeating itself over and over again, something like: "an investigation issued."
Revealing mistake: When the postman goes upstairs to see Julie with the package, he steps on the broken step and falls down the stairs. As he rolls down, the bulky outline of kneepads under his trousers is visible. (00:17:30)
Revealing mistake: After Ralph goes to the club and meets Miranda there's a scene where the front page of The Daily Telegraph newspaper (dated March 9, 1990) is show. It has the headline "From Uncle Same to Buck 'ham'" with a picture of Ralph. The article under the headline hasn't been changed from the original news story. The article begins, "Mounted police broke up a mob that had looted shops and attacked a police station in Hackney, ease London, last night after a poll tax protest by up to 5,000 people blew up into a riot. With running battles between officers and demonstrators. Scotland Yard said at least 50 people were arrested and several police officers hurt in the worst violence yet seen in the campaign against the community charge."