I went with Pally tank, Priest Healer (still SP atm), Ele Shammy, Fire Mage and Boomkin. I am focused on PVE.

So far it's work fine for me, but I am still a noob and haven't done much in terms of Heroics.

If I were to do it over, I would probably go with Pally tank, Shammy Healer, Warlock, Mage and Hunter. That would be 2/3 CC and good DPS. The shammy brings heals and totems to the group. Lock also brings that increased DPS buff that doesn't stack with the Druid Earth & Moon (I believe so anyway). Also, I think the hunter and warlock are at the tops for DPS atm. If you're set on a druid, I would likely change out the hunter or lock - unless you're going resto, but I would definitely keep a shaman in there.

However, I am sure many combinations would work. Tank, Healer, 3X DPS...whatever you like. I think it's nice to have a big mix so you don't have worry about loot decisions as much (Plate, Chain, Leather and Cloth classes).

I would most likely put the healer and tank under the control of the same person though. Although, if it was a warrior tank I might not since I believe they are more demanding (never played one past 31 though, so someone else can chime in on that).