Character mistake: In the scene where the Bandit convinces Snowman to go with him to Texarkana, Texas, to get the beer, he says, "It's only 900 miles there and 900 miles back." In fact, it is only 557 miles between Texarkana and Atlanta, meaning they could cover the 1114-mile round trip in the pre-determined 28 hours in an average speed of 40 mph.
Character mistake: Sandra Bullock's German is very good, but not perfect. She says about her husband, "Gestern hat er seine Schuhe in den Gefrierschrank gestellt," ("Yesterday, he put his shoes in the freezer"). Immediately afterwards, she says "seine Schuhe ins Gefrierschrank," ("He put his shoes in the freezer"). The word Gefrierschrank (freezer) in German is masculine and can never be preceded by the accusative case contraction "ins", the contraction for "in das." She just changed the gender of the word Gefrierschrank (freezer) from masculine in the first sentence (correct) to neuter in the second sentence (incorrect). (01:40:05)
Character mistake: Dissecting the chrysalis, Dr. Roden says that "Somebody grew this guy. Fed him honey and nightshade." Nightshade is indeed one of the typical plants eaten by the Death's head moth, but since "he" is only a pupa, would have not eaten honey, which is something only the adult specimen eats. (00:48:50)
Character mistake: When Ms. Gruwell tells Gloria to read the first sentence on the board Gloria reads "Odysseus had no sense of direction." but on the board something different was written.
Character mistake: When Troy is getting the bomb ready, the screen shows it will blow in 216 hours, which is 9 days. Yet the agent tells Archer it will blow in 6 days.
Character mistake: The movie starts with shots of the moon Io and the company's operations, with typed descriptions at the bottom of the screen. Guess they couldn't afford a proofreader. They spell dependents as dependants, marshal as marshall, and principal as principle.
Character mistake: Sid deduces that Billy could be the killer because he could have used his phone call from jail to make the threatening call. However, the deduction has to be incorrect, since if it was really Billy, he could have never used the voice-changing device.
Character mistake: When Lauren is playing roulette, she has $14,000 worth of chips sitting on red - if she wins, she gets double, $28,000; and if she loses, she loses all of the $14,000 - but the croupier is troubled and says to Lauren that she hasn't got enough to cover the bet, which is ridiculous; all her $14,000 chips are sitting on red, what more does she need? Even the head croupier is called in, and, after much chatting, all the other players are asked to take their chips away as only Lauren is playing this round, which is ridiculous: All they have to lose is $28,000; that's nothing for them.
Character mistake: In the bathroom scene with the fat man tied up, Kevin answers his phone upside down.
Character mistake: On the tour boat in London, the voice on the loudspeaker says 'if you look to your right, you will see the Tower of London'. Except it's on the left, given the direction the boat is travelling. (00:53:00)