I have set myself up with 2 tanking specs one blood and one frost. Kept the frost since it is one I knew and have familiarize myself with the blood one. Got it from pwnwear.com, very nice site with lots of dk resources especially for tanks, little warning there is some swearing there so wouldn't recommend it to a younger audience. I remember when I went into ICC last week as blood to try it out, wasn't very pretty, felt I as just masking keys and didn't have a plan. Played some heroics this week as blood to get used to it. Totally different story this week, went on and dis the whole first 4 bosses as blood. It isn't quite as smooth to run and you have a lot less air tank available but not bad overall. Will post my blood spec later.
Well time to /logout, u have a good weekend and hope to see you next week.