How fucking cool is that 
The fucker slowly goes to pieces right in front of you until.... 
Can you fuck with the syringe dosage...up it for the full work related shooting experience 
Well you can always escalte things, but i find that a bit of subtlety goes a long way insofar as driving someone fooking nutz.
I worked as a union steward while doing a 17 year stint with the Post Office and had an official there set his sights on me. I decided to broaden his narrow assed mind and send him various magazine subscriptions. Every - and i do mean every - magazine i delivered i would remove the subscription card, fill out his name and address and check the "please bill me later" box. His mailman was a friend of mine and he told me that the guy begged him to stop delivering all magazines - my friend of course replied that this would not be in line with postal regulations.
After i'd treated him to over a hundred various subscriptions, from "Better Homes and Gardens" to "Penthouse Forum", i delivered the coup d' gras. I went to a news stand, bought a copy of a gay magazine called "Studly", filled out the card and sent that and a money order for $30 (no "please bill me later box) in. One added twist though - i put down his name, but his next door neighbor's address. Shwing!
Honibaz