Anti Melee group Boss strategies.

I was reading another thread and someone mentioned a specific boss being anti melee.
(Ionar in halls of lightning).

I thought it might be useful to build a list of Bosses that have abilities that make life more difficult for Melee groups.
Ideally we would also propose solutions/workarounds for these abilities.

I'll try and post any I find as my team work through northrend.

For example

Boss name : Ingvar the plunderer
location : utgarde keep
Ability : Dark smash (heroic only) 360 degree damage. Non heroic I believe it is only 180 degree damage, so keep dps behind boss.
Solution : Have a macro to set your dps to follow your healer. (keep healer stationed at range). When Dark smash is being cast, trigger follow macro, and
run tank away from Ingvar.

Actually I found it was easier to bind my up arrow key to make my tank step forward and all my slaves step backward. Soon as you see the castbar hit the key and they will all move safely out of range of his blast and as bonus all still be near each other and your main.

But this guy pales in comparison to the third boss in Utgarde Pinnacle. I will never run that place, ever again.