[Phantasm]

Originally Posted by RGTraynor

Or well, look. Hollywood. The same place where Antonio Banderas put a shotgun blast in a mook's belly, and blew him over twenty feet and several pews in a church.

Now either the poor GM watching can:

(a) try to stat out the knockback on El Mariachi's +5 Puissance shotgun, loaded with depleted unobtanium rounds and boosted to .15 c, or;

(b) shrug and mutter, "Meh, it's Cinematic, whatever," and stagger on.

I choose B. In fact, GURPS has something similar to "Hollywood Knockback" in Gun-Fu (and I wanna say the Basic Set, too) for similar stuff where knockback is doubled or even quadrupled for the injury sustained, as either a perk or campaign switch. It's like Bulletproof Nudity, where removing your shirt makes you harder to hit through a bonus to active defenses.