beating level 50 in horde with just one team mate (gears of war 2)
some beautiful killings and epic victories (halo 3)
23 deaths in a row (call of duty IV: modern warfare)

Tea Bagging people in the original Halo for Xbox and PC. :D

Owning 3 Vs 1 matches in Goldeneye XP

my most satisfying moment ever was in a clan war in Tactical Ops: Assault on Terror (CS-like mod for UT99). too bad nobody recorded it, it was simply amazing. I was the only one left of my team, with few HP and no chance to beat the guy from the other team, so I decided to wait until the round was over at my base.

it's tough to describe without drawing or showing the map, but there was a bunch of columns in this room and I was hiding behind one of them, and I managed to see the guy coming into the room (he didn't see me). everyone in teamspeak was quiet so I could hear the steps (there was no ghost cam), and just when he was passing by me, I walked (so I didn't make any noise) around the other way and a few seconds later the round was over (IIRC it was a bombing map and I was in Special Forces, so the other team had to plant the bomb, meaning we won the round)

Easy... When i win :D

I love it when I get "Hate Mail" messages over the PSN. It lets me know im good enough to make people stop actively playing the game, find my name in the list of people played with, then type a message, all while they are probobly getting knifed in the back cause you cant pause multiplayer. :)

^Lol I don't think I ever get hate mail, just a lot of invites. I would have awesome sniper battles where me and the guy would be each other and his team and send messages back and forth (good ones of course).

i forgot about spike deaths in smash.....they are so satisfying, i even have a video/compilation of me doing a lot of those on youtube.

rolliing to dodge a rocket coming straight at me in uncharted and then using the shotgun right in his face while he was reloading lol

Anytime you pull a 1 vs multiple win on Gears 2 (off host). If you don't have host shotgun, going 1 on any amount is tough. With the right weapon and some skill though it is both visceral and extremely satisfying to pull off.