Other mistake: At one stage the Angels speak with each other in a different language, so that the people sitting next to them wouldn't understand. Having listened to it for a few times, I realized it was Finnish. Funny though, the thing they actually said there (in Finnish), was totally different than the written translation. (00:41:45)
Other mistake: Early in the film, Valerie Barksdale (Hillary Swank) visits Annie Wilson (Cate Blanchett) for a psychic reading. Valerie has been severely beaten by her husband, and her badly black and blue eye is swollen shut. A day or two later she visits Annie again. Amazingly her eye appears to have completely healed, even though the other marks on her face are still visible.
Other mistake: At Natalie's house, when she is leaving and Lenny is taking a picture of her, the background looks totally different than from what is shown on the picture: the curtains are opened wider, the door is half open, there is a lamp on the left and there is no mirror on the wall. (00:17:10 - 01:20:50)
Other mistake: During the ending scene, when Samuel L. Jackson is walking away from the camera across the lawn, he passes directly between the platoon on the right practicing rifle drill, and the platoon leader giving them orders. Marines are taught to NEVER do this. It is called "breaking ranks", and a Colonel in the Marine Corps would have known this.mrseven
Other mistake: In the scenes after Giovanni Ribisi is arrested, his looks are constantly changing. In scenes where he is talking to Vin Disel his face is very fat. When he walks by Abby's desk he is thin again. If you get Boiler Room on DVD you'll see an original ending where Ribisi is thin all the way through the end of the movie; Because Giovanni was preparing for a film that required him to gain 30 something pounds, the scenes that needed to be reshot for a different ending are very defined.
Other mistake: Bruce Willis's character has a very clear scar on his forehead in some scenes (I think it's on the right as you look at him) - doesn't really fit the whole "unbreakable" theory. You'd think they could have put some makeup on it...
Other mistake: At the beginning of the third chapter ("El Chivo y Maru"), when the Comandante and Gustavo are driving to see Chivo, the Comandante says to Gustavo, "Make a right here."; however, Gustavo ignores him and never makes a right. He just keeps going straight.
Other mistake: In the fight scene outside Trish's apartment, Jet Li kicks Maurice so he gets a scar on the right side on his lip. Later in the American football sequence you can at one shot see that he has the scar on his left side of the lip and in another shot it's completely gone.
Other mistake: When Bullet-Tooth Tony goes to 'open the dog' in order to get the diamond out, and then Vinny confesses that he has it, the dog starts to go crazy and in one scene proceeds to pull Sol's jacket off. If you look at Bullet-Tooth Tony's face, he is laughing at how crazy the dog is (this would have been a real-life giggle because the character is quite serious at that moment in the film).
Other mistake: When Claire Spencer loses her husband's mistress' braid in the lake, she tells him this and Dr. Norman Spencer acts like it's the first time he's heard her talk about it as he picks it out of the water. She has, however, mentioned the braid a short time before this to him, right after the rough sex they've had.