I really have avoided arenas because I'm just straight up not any good.
But last night, after we called raid, I decided to go do some BG's and even a few 3's skirmishes with an Arcane Mage and a Resto Shammy.
I almost felt guilty.
We weren't even on vent and the synergy was incredible. We would both utilize CC's (Fear, Sheep, Seduce) and our immobilizers (Shadowfury and Frost Nova) and line up trains.