Other mistake: When Bruce Willis and Troy Garity get hit by the rental truck, you can see the car is a junked car. When Bruce Willis gets out off the passenger side door, there is no interior on the inside of the door.
Other mistake: In the scene where Joe is playing squash with 3 other office excutives he hits the ball so hard it leaves the court and hits a clock on the wall behind them. When the clock falls you can clearly see the glass case below start to break before the wall clock even falls onto the glass.
Other mistake: When Brad Pitt puts David Krumholtz in the car after Krumholtz is hit in the head by a falling bullet, if you look closely you can see him breathing despite the fact that at that point he's already dead.
Other mistake: When Orlando is driving the car (I believe the old beat up car) the gear shift is all the way up in the park position, yet the car is moving.
Other mistake: Near the start of the film Billy Connelly hurts his foot. He can't walk without using a crutch, but not that long after he hurts it he manages to drive without any bother. Would this not be a danger to drivers, and how can he drive so well only a short while after a sharp piece of wood has just gone through his foot?
Other mistake: When Stephanie (the kid's mom) gets sprayed with mud by the bus, it is accelerating as much as it can in reverse. Why would it accelerate so much in reverse if it's trying to avoid falling down the hill?
Other mistake: When Kyle and Natalie are in the bedroom together and she reaches in the drawer to grab the lotion for him. You can planly see that the logo for the Jergens bottle is censored and the logo is blurred out.
Other mistake: Near the end of the movie, there is a party scene in which Jessica and her ex-boyfriend are talking on the roof of the building. Behind them is a sign posted by the door to the roof. The letters are reversed, as if you're reading the sign through a mirror.
Other mistake: When Boyd is on the rooftop, he is holding the bottom of the ladder from the helicopter. A view from above shows marks from a previous take.
Other mistake: Royal and Etheline are walking in the park and it is written in the book. But it's also written "Childrens play in the trees". They are alone in the park. There is only Henry Sherman at the end and a dog on the other side of the pond.
Other mistake: When Joe falls on the bungie, we see him hit his head in an entirely vertical position with his head at the top. This could not have been achieved considering the position he was in in the shot before.
Other mistake: During the credits of the movie, after Morris Day points to Jay and Silent Bob, there is an Asian guy jumping up and down at the far right hand corner. The shot switches back to Morris Day and when the shot goes back to Jay and Bob the Asian guy is wearing a light beige hat. The extra submitted this entry himself - he was wearing the hat during the shots. Then after several takes someone in costumes noticed it was a major logo ("No Fear") so he had to take it off. The shot was used before he had his hat on. (01:36:00)
Other mistake: In the shot of Jimmy and Chloe tanning by the window, Bubble Guinea Pig is visible, but it isn't until the next scene that Jimmy receives him for Christmas.
Other mistake: In one scene, Janey's brother Cody is being picked on by a group of guys, and Janey is trying to get rid of them. When Jake breaks up the group, Cody throws a punch and accidentally hits Jake. If you watch closely in the next shot, Cody makes the mistake of looking directly into the camera for about a half-second. This is also pointed out by the director on the DVD commentaries. (00:30:29)
Other mistake: Just as the Lizard explodes we see Liverpool score, but you can also see that there are no names on the back of the players' shirts. However, every team in the English Premiership must have them. This is probably due to licensing issues but its a mistake nonetheless.
Other mistake: In the very last scene, we see a poster for Time magazine telling the story of the husband and wife Kung fu athletes. The bottom line reads "Wins World champion Bowling again". It should be "Championship".
Other mistake: On the first day at Stuart's apartment Leopold wears some green 19th century trousers he wasn't wearing during his time travel, and which surely weren't part of Stuart's wardrobe. (00:30:05)
Other mistake: The camera shows Jesse's "Prison Train" as it comes down the main line and whistles. As the train approaches the camera the driver opens the cylinder cocks and you see the steam shooting out from the front of the locomotive, at ground level. The steam cocks are never opened on a steam locomotive in motion unless the boiler is too full. They are actually there to let condensate water drip out the cylinders while the locomotive is standing idle, and to help the cylinders warm up by blowing warm steam through them. The action shown is equivalent to driving a car on the highway with loose sparkplugs.
Other mistake: When the guy that is hosting the hair competition is looking up at the old train station display board and going through the names of the salons, The Cut Above is on there, even though they haven't entered the competition at that stage. (00:14:40)
Other mistake: Legally Blonde was shot at a Delta Zeta Sorority house (a Z is very easy to change into an N). Proof of this can be seen in the scene at the beginning of the movie when there is a shot of the entranceway floor. On the emblem of the floor there is a Greek delta and what at first glance appears to be a N. However, if you look at the delta at the proper angle the N is a Z.