Near the end of the movie, when Scot and Walters fight, there is a short sequence of Scot without his jacket before he actually takes it off.
When Davis shoots at the police officers, she fires 18 shots, but the Desert Eagle she is holding can only carry 8 to 9 bullets in a magazine.
When Scott turns on the gas in Greer's apartment, he turns the valve perpendicular to the pipeline. That would actually turn a gas line off. The valve handle must be parallel to the pipeline to be in the on position.
Obvious stunt double when the two leads jump off of a bridge and into a moving truck.
During a scene involving a high-speed car chase, Kelly Brook's character leans out of a car's front passenger window to shoot at a pursuing vehicle's tire. A stationary object, probably a building, is reflected in the car's rear passenger window.