Character mistake: The sign for the hotel where Jake is staying at in Mexico says Tengo Quarto's para Renta. The word is spelled wrong. It should say CUARTOS. Also, there is no apostrophe s in cuartos. It is plural, not possessive.
Character mistake: Sybok tells Kirk that no one believed the world was round until Columbus proved it. Someone who studied at the Vulcan Academy should know that the Greek philosophers had proved the world was round and calculated its circumference centuries earlier. Columbus never set out to prove the world was round, just to find a shortcut to India.
Character mistake: The sign Riggs holds outside the South African Embassy has a spelling mistake. The sign says "end apartheid now" but the word apartheid is misspelt as "aparthied".
Character mistake: Clark has too many lights on his house causing the city to go dark. There is a scene where the power plant needs to boost their output. There is a close-up of a guy flipping the switch. Look at the way they spelled auxiliary - auxilliary. (00:37:54)
Character mistake: In the finals of Video Armaggeddon the compere keeps making comments such as "Jimmy loses a life and starts over in world two", "Laura finishes world two", "Lucas finishes world two". All three times the relevant person is actually in World 1 - Level 3. In Fact at no point are any of the competitors in World 2 and the only time any of them is out of World 1 is when Jimmy uses the warp to access World 4.
Character mistake: When they're reviving Lindsey, Bud screams "fight" and slaps her. watch as she closes her eyes on the second slap while she is supposed to be dead.
Character mistake: Chick Gandil mispronounces Eddie Cicotte's name, calling him "Si-coty" instead of "See-cot."
Character mistake: During the fight in the double deuce where Wesley brings Jimmy in to take all the bouncers on, Jimmy takes on Wade, and Dalton comes to his rescue. Afterwards Wade says to Dalton 'same town new story', when in fact the line should have been, 'new town same story'.
Suggested correction: Wade said it that way on purpose. He was alluding to the idea that there is something different about this town's situation, compared with all the other towns where it was the same old situation.
Character mistake: While pitching his shrinking machine to NASA Szalinski claims that reducing the size of a rocket's payload would result in "staggering" savings in the fuel required at takeoff. However, he makes it clear that his machine works by reducing the space between atoms, meaning that the shrunken object weighs the same as the original. Weight is the critical factor in calculating fuel consumption, not size. Anyone at NASA would pick up on that instantly.
Character mistake: In the movie they grab Genghis Khan in 1209 which would have been correct, he ruled Mongolia from 1206 to 1227. In the presentation at the end they say in 1269 he did this and that, that would have been Kublai Khan's reighn of terror in Mongolia.
Suggested correction: Bill and Ted have proven not to be that smart. Easy for them to get those things confused.
Character mistake: When Eric Roberts' character receives his letter at the start of the film it says "congradulations." instead of congratulations.
Character mistake: Meek's first name is spelled in the credits as "Steven"; however, the letter being signed by the students accusing Keating of misconduct shows the spelling as "Stephen."
Character mistake: When Mrs. Barrett is on the school board stating her case, she said that the test scores on the practice exam were 35% below passing. Earlier in the movie, when Joe Clark opened the letter, the Eastside passing score was 33%, which was 42% below the required passing score of 75%. Since she was trying to get him removed, it would have been to her advantage to say 42% instead of 35% - 35% would have made it 68%, which would have still not been enough to pass.
Character mistake: During the car chase scene (with Wally and Dave in the cop car), at one point Wally hears a gun shooting at them and says to Dave, "Is that somebody shooting at us?", and Dave responds, "I didn't hear anything." Dave would realistically not have answered like that to Wally because when Wally asks that question, Dave (being deaf) was looking away from Wally and towards the front of the car, so he would not have been able to read Wally's lips to respond that way.
Character mistake: When the platoon is walking to the village the next morning after the firefight in the jungle the previous night Brownie is shown walking with no sleeves on his fatigues then later on right before he's shot and killed by the VC he's shown with sleeves on but rolled up when talking to Ericsson near the farmer in the rice paddy.
Character mistake: Despite being blind, Erika Breen's able to locate light switches and door knobs throughout the movie without feeling for them like a blind person would do.
Character mistake: When Mollie goes to Albert's office for the first time since having Mickey, Albert asks if he is walking yet, and she says no. In the next scene with Mickey, he walks, and is walking when he visits Albert's office.
Character mistake: Dooley refers to his car several times, saying "my 1965 Mustang." It is actually a 1966 Mustang.
Character mistake: Dana calls Vankman by his real name "Bill" in the bedroom scene when they're on the bed with Oscar. She says, "Bill, what are we going to do?"
Character mistake: Why would the rich witness be at the supermarket himself and using a taxi cab?