Yea my shammy is 867 and when Stormkeeper lines up with LR and PotM I get to 900k-1.3M depending on how big the pull is. Obviously that is the "blue moon" scenario but god damn it feels good when it happens.
Edit: To clarify, I am referring to 900k-1.3M aoe dps. I have never bursted 4-6M dps on anything, as the original guy claims his friend can do.