Well, I was playing Halo: Reach last weekend, it was typical FFA slayer, 25 kills to win, and (this is the part I cant believe), I won three games in a row. But what more insane, was that I was killed a total of 14 times... for all three games1
Now that may not sound like much of an accomplishment, but for me, that was fuck amazing.
Also, In one match of COD: MW2, I actually got a total of 32 kills, earning me MVP, mostly because I completely fucked the other team with a pair of sentry guns that locked off a major corridor, and the morons didnt bother to try a new approch.