I'll remember it as the expansion where almost everyone I played with moved server or quit. I'll remember it as the expansion where I switched my main from a mage to a druid and won't look back and mostly I'll remember wanting it to hurry up and be over with so I could play cataclysm. I've had fun with it but as far as my wow experience goes it's been the lowest entertainment value through-out the entire game and I shant look back with rose-tinted glasses.
What sticks out in your memory that you will remember it for?