Well, Ill be a monkeys uncle, but it works. Went into Naxx for the first time since changing up some talents and following the recommended rotation and sure enough my DPS jumped to 2100+, then a little later was at 2200+. This leads me to the inescapable conclusion that I dont know what DPS actualy means. I always envisioned DPS as basically starting when you pull the boss/mob and stopping when the body hits the floor. Take that time and divide it into the total damage done over that time and voila, theres your DPS. So I would try to pour as many spell into a battle as possible, heavily relying on my faster casting spells, which flies in the face of the above method that favors slower casting but higher damage spells.
So, can anyone give me a quick and dirty breakdown of how DPS is actually calculated? While Im tickled pink to have drastically increased my DPS it irritates me that I dont understand the mechanic.