The best I've achived is a 10 man perpetual motion ring around the tree in outside the AH in SW.

Each character follows a different characters (obviously the one in front of it) and you have the first character following the last chracter. By the time the movement lag catches up to the last chracter it in turn moves your first chracter, thus causing a perpetual motion ring.

Slightly off topic but slighly relative all the time.