This idea sparked of this previous thread except for one small detail which I discovered 5 minutes ago.
http://www.mmowned.com/forums/wow-ex...arlos-hat.html
It turns out you can actually disenchant the hat (Don Carlos' Famous Hat - Item - World of Warcraft), which makes this an IDEAL area to farm Large Prismatics. As a warlock, I can solo this fight, but the fight is also doable as any other caster/hunter with a healer. He only hits hard in melee range, and his ranged attacks are an utter joke.
Although the instance reset does become an issue, this is an excellent way to grab some extra gold or some enchanting mats.