Normal dungeons, no tank needed. I've cleared every normal dungeon with the exception of stratholme with 5 shammys with no problems -- including Occulus. One of these days, I'll go back to Stratholme as I'm sure I can do that one too. As far as heroics, I've only been able to clear Drak'tharon keep. I've farmed that probably at least 20+ times now: http://www.wowarmory.com/character-s...kar&n=Zappyzap

The mobs hit so hard in heroic that you can usually only take 2-3 hits before you are dead, so the the real key here is having a dedicated macro to heal each character. If you are using /cast [target=targettarget] some heal spell; you willl die. Without it, the boss would switch targets for an instant and when you press your heal key, it will hit the wrong person causing a wipe.

If you are simply farming heroic emblems, I would suggest learning Drak'tharon as that's pretty easy, followed by snake, rhino and eck boss in Gundrak for a quick 7 badges a day. The 1st boss in UT Pinnacle is very easy well. Just keep grounding totems up and go to town. I would imagine the 1st two bosses in UT Keep to not be much of a problem either. My first time in Occulus, I didn't realize I had it set to heroic til after I killed the first boss. I continued on and downed the 2nd boss, but kept wiping on the mage lord, so I went to normal mode to learn the fight. Now that I understand it, I believe heroic Occulus is doable as well as 5 shammys. The 2nd boss was the real challenge here as I had to spread my guys way out and cross my fingers that the earth elementals would taunt the boss off just long enough to get a quick heal off.

However, if you swap one of your shammys out and throw in a tank (I've used a druid, a paladin, and a DK with the DK being the easiest), you'll fly through the heroics with not nearly as much of a learning curve (and repair costs).

I used to be closed-minded and thought no heroics would be possible until some (multiblocks perhaps?) said he cleared Drak'Tharon as 5 eles. To my surprise, it worked quite well and I can clear it just as fast I did when I used my daughter to tank it on her druid.

I plan on retrying in 3.1 where our pets get buffed a little and along with the stoneclaw glyph to see if that makes the difference.