QUOTE (CircuitBoyBlue @ May 21 2008, 12:14 PM)

The best tool in the box of pacifists in SR4 is a spell whose name would probably get blocked by the censor programs here at work. But suffice to say it's an AoE spell that whittles down dice pools pretty niftily in a manner that doesn't piss everyone off. No killing, and it doesn't even harm someone (until your street sam takes advantage of their near-catatonic states to blow their brains out unresisted). I think that spell would unarguably fit even the strictest of definitions of pacifism, and it has real, pragmatic benefits, as well. Less people wanting to kill you is a way better reason to use non-lethal methods than "principles," but where they can overlap, that's groovy. A month or so back, my character got to use this method to try to prevent a race riot. A good time was had by all, even the opposition (which rarely gets said). Of course, the problem with AoE sustained spells is that someone can step out of the area, which wouldn't be possible with the single target version. Someone ended up accidentally getting outside the effect area, threw a molotov, and my friends machine-gunned the whole crowd (which got a lot less disturbing after I'd dropped my spell).
Still, as I'm sure has been said millions of times, non-lethal methods are a runners friend, where possible. But relying solely on them is going to make you at least as unflexible as the guy that only has lethal weapons. Shock gloves are easy enough to carry around though, that there's really no reason to be in a situation where you can only take someone down by killing them (provided they're a person and not a machine, in which case GI Joe says it's ok to kill them wholesale).
I'm at a home computer, so I can say Orgasm.

As much as people laugh about this spell, it's true. I mean, Stunball does damage. It's not permanent, but it leaves nasty headaches.
Orgasm? No bad side effects. And you're right, a good time is had by all. Unless, well...the bad thing happens that you said. But it can indeed work.
I agree with flexibility-I mean, keep the options open. You don't always maybe want gel rounds-as you said, they are useless against drones and the like.
But I still think there is indeed rarely an instance where you are FORCED to kill the oppositon, when knocking them out can work just as well. Wetwork, I mean, you're signing on to kill someone, that's aside. Otherwise, I still stand by the fact that if you kill in Shadowrun, you kill because you want to-though I'm sure some might disagree there. The juiced up Adept that hits for 11P with Killing Hands can just as easily turn Killing Hands off and knock them out to tie them up. My buddy actually played a character that earned a good 160+ Karma, was a heavy weapons and gun expert, and a big game hunter...and never killed one human or metahuman in his entire career. Knocked out? Sure. But never killed.
I'm sure I might not be thinking hard enough, but aside from taking wetwork, I'm trying to think of a situation where you'd be forced to kill-ok, someone blackmailing the character into killing someone or else the runner's girlfriend dies and the runner's out of options could count, Ill give you that.
I'll also say that people of course end up dying due to accidents...say, hypothetically, the stun rounds end up knocking down a thin beam and a bigass thing falls on a guy and kills them, or in the process of stick-and-shocking the driver of the car, the car crashes and people die from their wounds.