Mine just happened. I'm a DK, was fooling around dueling as unholy, waiting for a heroic queue, when these two alliance show up outside org, and killed me every time i got low. Me and my rogue friend chased emm and camped emm for like thirty minutes or so, with both of us dieing every now and then, basically world pvp 2's matches. Then, my rogue friend disappeared, So i went Blood. (in before "blood is OP" I know it is, everyone knows Blood is fucking fantastic outside of arena), and gave chase.
They had flown to regroup on the cliffs just in front of Org, so I attacked emm there. At the time, there was only another Blood DK and an Arcane Mage. I went after the pve geared mage first, and killed him quickly, and then worked down the pve geared blood DK and killed him. They kept spawning, and I kept 2v1ing them for about 20 or so minutes, until they unflagged.
Then, a Night Elf hunter showed up with emm, they were all up there with me, and I was sure they'd get me this time. I got a Dark Simulacrum off on the Mage the second he flagged, and got lucky enough to copy his Time Warp. He then popped mirror, arcane power, etc, while the DK popped army (which i interupted immediately) and the Hunter popped his big cooldown shit.
I killed them.
I killed them all.
I popped IBF right off the bat, then killed the mage within the timespan of my AMS, I then worked on the hunter, killing him quickly, and spent about 5 minutes trying to finally kill the DK, before killing him with about 2k HP left and no cd's.
Almost directly after this, I received 3 separate whispers from lvl 1 orc alts, telling me that I am either A) ridiculously OP, or B) ridiculously awesome.
I would literally pay hundreds of dollars to have had fraps on when this happened, but all i have is a story.
Anyway, what are some of your greatest PVP triumphs?