Me and a few guys from my guild managed to find our way into Mount Hyjal - a zone that isn't officially done yet but that I had been dying to see. We even had to die to get there.

Red skies, high scenic mountain passes, giant evil craters, the World Tree (including the partial skeleton of Archimonde), an extremely deep pond and a jump-off point we used to fall for friggin' ever into the next zone. Lots of fun!