So I was having some success with a mid-range control/burst druid last night. Mostly the same cards as the watcher druid I posted a couple of times before, but
-2 ancient watcher
-2 sunfury protector
-1 cenarius
-1 spellbreaker
+1 savage roar
+1 force of nature
+2 wild growth
+2 azure drake
My kind of deck, you fight for board control until you can burst them down in one turn, something people usually don't expect from druid. I think I went 7-3 with it, back up to rank 4, just last night because I had just finished the 7 win quest before logging off. Each loss was to a rush deck, one warrior, one paladin, one zoo, but I swapped out a sylvanas for a doa after two losses to rush. Warrior and paladin aggro are a little more difficult to hold off, but luckily they aren't as common as the zoo, which is just as likely to get burst down before they finish you off.
Edit - Oh and something else was taken out for a stampeding kodo, works especially well in the pesky shaman matchup for druids. Innervating kodo turn 3 after your shaman opponent coined feral spirits turn 2 is nipple rubbing good.