Several games of MW2 Search and Destroy, I've gotten 16+ kills, always <2 deaths. I think my best was a game on Favela where I was literally sprinting the entire time with my 2 Models out, and I killed the first three guys in the game by running in circles in and around that little shack, all three of them were chasing me, but I killed 2 with my models and killed the third with my throwing knife because he thought he could outsmart me by crouching in a corner.
I got a message from one of the butthert guys after that game, saying "Models are hacks". Ironic considering the guy's name was XLegitxH4xX (or something like that) and he was quickscoping the entire game.
I've also had several raids in Ulduar 10 and ICC 25, where my kitty clutched the raid. Usually with brez's, or off-tanking, but the most notable one that I can recall, was this one time we were doing 25 Putricide hardmode, and our third tank died right before going into the final phase. One person said "Ah fuck, its a wipe now", but I spoke up and said "I'll offtank". So the first tank gets his stacks, the second gets his stacks, and right when it comes to me, I say in vent "I'm gonna need some serious heals" and clicked my "oh shit" macro, which activates survival instincts, enraged regen, and /y "OH SHIT!". My health skyrockets to 64k with my cooldowns and the cooldowns of the other healers, and we're actually doing it. He gets to 5%, the dps are falling like flies, but the tanks are still up with me, I've taken the stacks twice now, and most of our heals are up. He gets to 1%, almost all our dps are down, and only one healer is up, so I quickly figure "ok, with just these tanks, this is going to take way too long", so I switch to kitty and pop berzerk (just came off cd) and flip around the back of Putricide to unlease my unholy feral dps. Except it was supposed to be my turn for taking the stacks. Normally I would taunt Putricide right now, but since I'm kitty, I can't do that. Not a problem though, because my insane dps on top of my already high threat, shoots me past the threat of the tanks, and suddenly I'm dpsing AND tanking. I should die in one hit, but I dodge his attack. And again. I get one last ferocious bite off, and he finally hits me, and we both go down.
We're all sitting there wondering what the fuck happened, because his health should have been restored as soon as I died (cuz of the stacks), but here he is, dead on the ground. No one says anything, so I say as smug as can be "Can I get a rez? I think I pulled my back, carrying you all"
The only problem with that awesome moment, was I got assigned to do that every single attempt after that DX