Easily my greatest moment ever was back when cRPG was still in its infant stages and before Strat was around.
Back when you could only play on the EU servers (NA did not exist), there was a piece of crap named Varyag. Despite his crying over being kickslashed due to his really terrible shield hugging strategy and exploiting the difficulty/str bug on armor, he did minorly well sometimes. The map changed and I instantly spawned, looked up, launched a bolt out of my then Sniper Xbow in the direction that their team had to run to get to the regular choke points, and after about 15 seconds I got credit for a kill (which also gave you bonuses back in the day). I looked on the bottom left of my screen and it said I had headshot him from all the way across the map!
Nothing will ever top that. Ever.
