If you are playing a warrior tank, follow this tip: Preventing “The Claw” – Binding Heroic Strike to Mousewheel « Tanking for Dummies. I did this near the end of tanking Karazhan and found that it helped a lot. I wonder if they’ll change Heroic Strike at some point? I don’t know if I’ll be using it in the future as I doubt I’ll be tanking much before Cataclysm. We’ll see if Cataclysm makes me want to raid again.