Ever wonder where that one bullet ended up that Rousseau got off as she was facehugged? It would have been great if somebody would've gotten shot with it, then immediately facehugged. Or if that asshole with the glasses got shot with it right in the head as he got facehugged, so the bullet goes through the facehugger and into his head Serpico-style, doesn't kill him, but the acid bleeding from the facehugger melts his face off, but the facehugger stays on him anyway for good measure. Or the bullet goes through the bullet-time facehugger about to attack him in mid-air, showering him with acid. Or he just catches the bullet in his crotch, then he gets facehugged.
Hey, if a little tiny splatter of acid can melt a guy's arm off as he's getting facehugged in AVP: R, I can have fun with this, dammit.
