So last raid night we were working on Heroic Sludgefist. Our raid leader used Exorsus Raid Tools to make this neat note with a list of healer cooldowns and the time to use them. What was particularly cool is that times in the note would count down as the fight went on. Then they would grey out as the time went past. So you'd see the who the next CD was, and how long it would take.
Still, though, Sludgefist was pretty hard. The thing is that almost every death is from chains in some fashion, so every death actually takes out two people. It's also a fight where it comes down to whether you have enough people survive to the end. We had some heart-breaking wipes. We wiped at 5%, 2%, and 1%, among others.
Finally on our very last attempt of the night we got him down. We had most people survive past the fourth pillar, and that was enough to kill him even as we lost many people in that last phase. I was chained to another healer in that phase, and we both moved in opposite directions and broke the chain. Must have given our raid leader a heart attack to lose half the healers at the very end of the fight. Luckily, the raid was able to hang on for another 30 seconds and kill him.