Character mistake: After Spike comes out of the evolution device, he asks Iggy "Do you know what the square root of 26481 is?" And then answers "191". 191 squared is actually 36481. (00:47:20)
Character mistake: Arthur (who knew him) says that Cary Grant was from Surrey and Iris (who is from Surrey) agrees with him. Cary Grant was actually from Bristol.
Character mistake: When Kevin is shooting the toys off the laundry chute with Buzz's BB gun, he's looking through the scope with his closed eye.
Character mistake: When Craig gets the milk out of the fridge he takes it to the table and pours it on his cereal. He looks surprised when there isn't much in the carton. He would've known this from the weight of the carton when he first picked it up.
Character mistake: When they arrive at the motel, the mother says that the grandpa is in room 13, but when he opens his door it is room 208.
Character mistake: When Mr Maddens is talking to the critic at the Mayor's reception, he calls him Alan. The character is actually called Patrick Burns, Alan is the actor's name.
Character mistake: In the scene where Rick Marshall is playing the Banjo, he says he has been "doing some thinking with just him and the old four string". His banjo has five strings and you can see the five strings when he lays the banjo down.
Character mistake: When Stan inflates himself, Michael asks, "How'd he do that?", implying that he doesn't know the rules of the Looney Tunes world. Since Michael was rolled into a ball by the aliens earlier in the film, this shouldn't be too much of a surprise.
Suggested correction: When Michael was rolled into a ball, he wasn't concerned with how that was possible and soon after he forgot about it. He was more concerned with dealing with the Monstars at the time and, in particular, helping his cartoon friends preparing for the game. When Michael witnessed Stan being flattened and inflated, it looked particularly strange and unfamiliar to him, unlike before as he couldn't watch himself experiencing being rolled into a ball. And that is what triggered his response about questioning how it was possible.
Character mistake: Dylan is showing Agent Cowan and the FBI director the pictures of the pigeons and Dylan and Cowan start arguing, while the FBI director continues to look at the evidence on the Four Horsemen. Whilst looking there is an article reading "FBI Investigation Stalls." On the first column of the article, it is mentioned that all four members of the Four Horsemen, J. Daniel Atlas, Henley Reeves, Merritt McKinney and Jack Wilder, all disappeared into thin air at the final magic show, and gave the audience fake dollar bills. By the time of the final magic show, Jack had faked his death and was presumed dead, so only three members of the Horsemen were present, not four. (00:08:55)
Character mistake: When Jimmy explains to the kids of the town where the aliens took their parents, he mentions the origin of the aliens being somewhere in the Orion Star System, 3 million light years away. The Orion system is way closer than that. It is actually less than 1400 light years away from Earth. 3 million light years away would place them further than the Andromeda Galaxy.
Suggested correction: This shouldn't be a character mistake. A genius like Jimmy would know something like this. It's basic astronomy.
That's exactly why it's a character mistake. A character mistake is when a character does or says something that they shouldn't based on who/what they are suppose to be, or something a character wrongly states as fact when they should know better.
Character mistake: In the Liverpool match the commentator says that Liverpool could win their 19th title, in the 1988-89 season Liverpool had 17 titles, and won their 18th title the year after in the 1989-90 season.
Character mistake: Some characters use the letter "s" at the end of a Pokémon's name when the plural of a Pokémon is just its name. The best example is when Pikachu says, "Roger must've sent the Greninjas to cause the car crash." Being a Pokémon himself, there's no way Pikachu, out of all characters, would say that.
Character mistake: When Charlie is making the come back against the guy in the bar, he only needed twenty but he actually gives 25. When Charlie asks how many so far a guy yells out 14, but he's actually at 19 at that point.
Character mistake: In the film, five items are stolen: the Magna Carta, the Turin Shroud, the Imperial Sword of Japan, the Pope's ring and the Pink Panther diamond. When Alfred Molina's character is challenged that they had found everything but the Pink Panther, he protests that 3 out of 4 is not bad, that's 75%. In fact, they had found 4 out of 5 or 80%.
Character mistake: In the scene towards the end, when there has been a bomb threat in the building, Billy Bob Thornton uses a pay phone to call the operator. He asks for the airline's base operations in "Greensboro, South Carolina". Greensboro is in North Carolina.
Character mistake: Chad actually steps on first base before the baseman has the ball. He was safe.
Character mistake: Towards the end of the movie when Tim Allen is on the roof and the fire squad is called. One of the firemen carrying the ladder accidentally hits a man in the head with it.
Character mistake: The first law class scene involves Reese Witherspoon getting kicked out of the room for being unprepared to answer questions regarding Gordon v. Steele, a very basic Civil Procedure case. The scene closes with the professor asking Selma Blair about the result in Gordon v. Steele. She responds that the court held that there was not diversity jurisdiction. The professor replies that Selma is correct. But, this is entirely the wrong answer. The court in that case held that there was diversity jurisdiction. Merely getting a case wrong would seem trivial, but again this is literally the first case any law student studies in Civil Procedure, a first year class. How could a screenwriter get this basic case completely wrong?
Character mistake: When Guy and his girlfriend are discussing why he loves the movies and how they help him remember important times in his life, Guy makes a reference to the obscure 1979 basketball movie The Fish That Saved Pittsburgh, and says how he loved Gabe Kaplan in it. Gabe Kaplan was never in The Fish That Saved Pittsburgh, but did star in a different obscure basketball movie from 1979 called Fast Break.
Character mistake: Before the Megarace, Rez looks back at the camera and says that they'll try to help him out-but you can see Juni's tires in front of Rez's car. In a shot before this one, Rez says Arnold will crush Juni-looking at the camera, which is in front of Rez.