Mortigan the Lock has an awesome post up on a single set of rules On How To Raid ANYTHING that you must read.
I find it terribly hard to remember all the nuances of each boss fight. Sorry, but I’m just not hard-core enough to memorize who casts what, and I really don’t care if Pixie McNixie in the bottom of some hole is planning to fear me, sheep me, or chop me in half with a big heavy axe. Why? Because overall things are pretty much the same from one boss to the next, so I figured I could come up with a single set of rules on how to raid ANYTHING. I’ve appropriately named these rules “A Single Set Of Rules On How To Raid ANYTHING.”
I also quite liked:
If you’re cool enough to be a warlock like me, you can even strategically position yourself right next to a mage throughout the fight, and Soulshatter as needed. Be sure to turn toward the mage when Soulshattering, so that you can watch the look on his face when the boss 1-shots him. If you’re a mage, disregard everything I’ve just said, and take one for the team.
But then again, I’m a warlock, and we tend to die first. Mages should share in the fun.