Something I noticed repeatedly tanking Forge of Souls for my 22 slot bag and DPS trinket, DPS like to hit stuff the tank isn't. What are they thinking?
Being a bear I don't have the fancy silence abilities the other tanks do so if there is a caster its is staying where it is unless someone else takes pity on my running around and silences it for me. So this means that on a lot of the pulls in Forge of Souls I make a skull beat it in the head, run around to get a little threat on everything else (mainly to make sure the healer doesn't aggro them) then settle back down with skull and whatever other mobs cared to join me.
I then have my feral faerie fire cooldown to use to keep moderate threat on anything not in my swipe range. More than enough to keep the healer safe and surprisingly often enough to keep aggro from brain-dead DPS. All I have to say to those DPS is hit the gorram skull and try to pick a target the tank is actively tanking otherwise.
I've got a much bigger beef with healers though, for example a aggro whore mage who took over 34% of the heals in a heroic and yet somehow the healer sought fit to keep healing them. Perhaps I've grown a bit bitter over time, or perhaps I am just more pragmatic, after all the less I get hit as a tank the lower my repair bill. In any case if there is a DPS that sees fit to pull before I do, or constantly pulls aggro on unmarked mobs despite having a skull marked for just that reason, then I am going to let them die. Scratch that, I am going to go out of my way to get them killed so long as it doesn't hurt anyone else. It actually makes tanking more interesting/fun.
The number of healers that would go along with my evil plan are few and far between and in fact the only healers I know that would let someone die for those reasons are also tanks. Coincidence? I think not. For the most part healers will heal everyone equally without bias. How boring.