You must either be a hunter or a shaman, i was doing this in the Test server last night, first hunters use eagle eye and shamans use far sight and click either where the opponents spawn or out of the back of the arena. Doing this you can either see the opponents your about to face so you can get a chance to get ready for the classes you about to face, or doing it behind you and outside the arena you can see some cool terrain of Outlands where one of the arena's is based in.