Pretty much all I can recall on this subject is a few special moments in BF:Bad Company 2. I absolutely loved sniping in that game, with the SV98 (the only sniper with a 10 bullet clip and not be automatic) being my baby. It's a little weaker than the other snipers, but with the 10 bullet clip and some skill, it can put anyone down in 2 hits if you're fast enough on the draw. And damn was I.
A wonderfully fun kill I got in Bad Company 2 (that the game never gave me credit for) was me looking through my sniper scope at some random enemy planting mines all over the exit to his teams base, and I can even make out where a couple of the mines are and immediately have the greatest idea ever. I line up my shot, take it, and wait the second or 2 it takes for the bullet to get there, and I miss. I quickly reload and get my sights back down on the mines, and he's still there, dropping more of them, so I take another few seconds to get my shot juuuust right, and pull the trigger. Oh man was it amazing to see the one mine explode, and then set off all the other ones he had down (there had to be at least 7) which turned the whole view in my scope into a fiery inferno as I saw the brief second of him being destroyed by all those mines. Really pissed I never got the credit for that kill though.
The last moment I can remember is probably the best. Once again, Bad Company 2, this time on the Harvest Day map. If you know that map, you know that map is freaking massive in all directions. And I was being one of those turds who camp on top of the hill behind the B command point, only this time, I was an engineer for whatever reason. So I'm just sitting on top of the hill, scanning the fields and spotting anyone I can, when I see someone ALLLL the way over at command point A, sitting in a little area of sandbags. I was surely upset because I was a stupid engineer for whatever reason, so I couldn't just snipe the bastard, until I had the bright idea of whipping out my rocket launcher to see what magic I could do with that.
The shot that I was about to make was such a lucky shot, because it had to cross a gap the size of the grand canyon pretty much to connect, and this was done with just a normal rocket, so no laser aiming or tracer dart for help, so "lining up my shot" was just me, aiming at the guy, and moving my cross hairs directly up until he wasn't even in my sight when I pulled the trigger. But it was glorious. I pulled the trigger on my very first attempt, watching the rocket sail across the sky and arc slowly, before it starts to really drop, and I'm just watching it, waiting, hoping, that it's going to connect. With a nice fire-y "poomf," I watched the rocket pretty much slam right into him and waste him, and I nearly died from how awesome it felt to watch the rocket soar for a good 5-10 seconds before it landed directly on it's mark.