Factual error: Even aside from the ridiculous recoil that a railgun would cause (yeah, I know they don't use gunpowder, but there's got to be SOME opposite movement, surely), how come when the darts (bullets, whatever) go straight through people, they still get thrown backwards? The passage straight through them means minimal energy being transferred to them, and as such they shouldn't be hurled backwards that much.
Eraser (1996)
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Directed by: Chuck Russell
Starring: Arnold Schwarzenegger, James Caan, James Cromwell, James Coburn, Vanessa Williams, Robert Pastorelli
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More mistakes in Eraser
Morehart: This is James Haggarty, our chief of security.
Robert: Hey, you ever done any wetwork?
James Haggerty: Only on three different continents.
Robert: Wow, really? Listen, you wanna impress me, slick? Do your fucking job.
Trivia: A projectile hitting the air at near the speed of light" (about 334,800,000 MPH) would instantly vaporise in a huge, blinding flash from the ridiculously intense frictional heating that would occur at such an enormous velocity in the atmosphere. The energy released would probably kill the shooter and anyone standing anywhere near him. Makes for a good movie effect though.