Take, for example, the screenshot above. It probably doesn't count because it happened on the Wrath beta and of course there are bugs there, but it was the beginning of a night that made me laugh for hours. If you can't tell what's going on... I'm piloting an airplane, my buddy tried to hop in with me but his chair is floating a few feet over my head for some reason, and someone decided to park their siege tank twenty feet up a wall, inside of the wall. That pretty much sums up the current state of Lake Wintergrasp, in case you were wondering.
If that doesn't count, there's the time a few years back when some friends and I ran Zul'Farrak, and a basilisk we aggro'd threw us twenty feet backwards for some reason, into another basilisk that threw us right back. We cried tears of laughter through about twenty minutes of the two basilisks playing catch with our flailing bodies before we were coherent enough to try and figure out what the heck was going on.
Do you guys have any memories like this? Do you ever wish you could go out and do them again for the nostalgia of it all, or are you pretty content keeping it a one time thing?