Hehe, another awesome one is called "ninjaskinning". works well, just wait for the valuable mob to die e.g. clefthoof bull or netherdrake, and right click-spam on the mob as the other player kills it. particularly cool to do this to lowbies of the other faction -- e.g yours 70 vs their 65. once you ninjaskin their mob, they should be on low health and running away. pop on your mount, and take them out.
and dance on their corpse for a bit