I was watching "Drive Angry" last night, which is full of great classical literature references, BTW, and there is a scene where someone gets blasted with a high-caliber weapon, and yep, you guessed it, goes butt-first backward through a plate glass window, airborne the entire time. Of course, the shooter experiences zero recoil. Now that is one powerful and completely physics-defying weapon.
Things I've learned from Kill Bill I (while on a con call so audio was muted)
1. Rifled barrels do not force the bullet to spin.
2. Shooting someone in the leg will make everything below the shot fall off immediately.
3. A rifle shot through a windshield and hitting someone in the back seat will leave a human size hole.
4. A shot to the head will cause the head to explode.
Don't forget in "Rambo First Blood Part 2" he fires a LAWS rocket inside a helocopter. Did they not realize that that weapon has a signifigant backblast. They made a similar mistake in "Deathwish 3" staring Charles Bronson.
"Taking of Pelham 123" has some of the worst cinematography I've seen in a while. Not only does Denzels handgun change almost every scene, in one of the final scenes on the bridge when they order him to drop the gun, you can actually see him reach down and catch the gun in his other hand so as to not damage the stage prop. Pretty poor editing IMHO.