Found this browsing around on Wowhead and thought I'd share. Now you can have headless horseman quotes stuck in your head anytime.
Copy/paste these into your chat box in game to hear them for yourself:
You've summoned him from the grave!
"It is over, your search is done! Let fate choose now, the righteous one!"
You knocked his head off!
"So eager you are for my blood to spill, yet to vanquish me 'tis my head you must kill!"
Uh oh, he summoned pumpkins to attack you! *gasp*
"Soldiers arise! Stand and fight! Bring victory at last to this fallen knight!"
Great... rogue pulled aggro and died...
"Your body lies beaten, battered and broken! Let my curse be your own, fate has spoken!"
Yay he's dead! Easy epics!
"This end... have I reached before. What new adventure lies in store?"
Or is he? No! He's outside lighting villages on fire!
"Prepare yourselves, the bells have tolled! Shelter your weak, your young and your old! Each of you shall pay the final sum! CRY for mercy! THE RECKONING HAS COME!"
Yay the lowbies put the fire out!
"My flames have died, left not a spark! I shall send you myself to the lifeless dark!"
But he lit another fire while the lowbies were occupied and he burned some stuff!
"Fire consumes, you've tried and failed! Let there be no doubt, justice prevailed!"
He also laughs a lot
"ha ha ha ha ha ha ha ha ha ha ha ha ha"