Factual error: In the final standoff, Smith shoots Hertz by holding cartridges between his fingers in the fire. This is not remotely believable. The casings, weighing much less than the bullets, would have been blasted off while the bullets themselves would have gone nowhere. (01:15:15)
Factual error: After Mr. Smith terminates the plethora of skydiving shooters, they all end up in an area the size of a basketball court, despite having markedly dissimilar velocities and trajectories created by the order in which they were shot.
Continuity mistake: During the love scene between Smith and Donna, when the killers first come in the door, Smith's pants keep changing from being down (while he is having sex with Donna) to up around his waist like normal as he rolls off of the bed.
Factual error: Smith shoots the windshields of both his own BMW and the van which is chasing him. The thing is, windshields on modern cars are made from laminated glass, altering between glass and plastic. When a windshield is shot, it will never shatter, unless you are driving a pre-1950's car.
Continuity mistake: At the beginning of the film, Smith escapes with the baby on a bus. He takes off his sock to cover the baby's head. Cut to a shot of him pulling the sock over the baby's head, then the camera angle changes to a close-up of the baby being held by Smith with the sock on his head; cut back to the original camera angle and he's still pulling the sock on the baby's head.
Continuity mistake: In the diner at the end of the movie a man is slurping the last of a milkshake from the bottom of a glass. When the glass is shot it is almost full.
Continuity mistake: Smith only puts four bullets between his fingers, yet Hertz gets shot eight times.
Continuity mistake: In the start of the film, Smith is seen to use an oil slick to slide on his back across the floor. In all subsequent shots, the back of his coat is clean, without any sign of having slid across the oil.
