Continuity mistake: In the final battle scene between Geena Davis and Craig Beirko, Beirko's character slashes Davis' character across the stomach (upper right hand side). In the next shot, the wound is located on the lower left side and in a subsequent shot, the wound has multiplied to become two wounds: one in the upper right hand side and a second in the lower left hand side.
Factual error: When Samantha Caine and Mitch Henessey are driving towards Buffalo, she receives a cell phone call from the villains informing her that they have kidnapped her daughter. They ask for her location, to which she replies "on State Route 5, 15 minutes east of Union Springs, New York." New York State Route 5 does not go through Union Springs; New York State Route 90 does.
Trivia: Scriptwriter Shane Black is a huge believer in recycling. Check out how much the moment when Jackson is captured by Bierko resembles Rigg's capture by McAllister in "Lethal Weapon". Black's 3 biggest movies - "Lethal Weapon", "The Last Boy Scout" and "The Long Kiss Goodnight" all involve a major character's daughter being kidnapped (to say nothing of all beginning with an "L").
Samantha: You thinking what I'm thinking?
Hennessey: I hope not, coz I'm thinking about how much my balls hurt.