*plays some more* Oh wait, everyone already secretly loathes me.
Anyway, someone should make a Shartuul simulator - now that would be really impressive. Or a use-the-Tears-right-on-Archimonde simulator! The possibilities are endless.
Okay, now I'm expanding the post. Name every single solo-effort thing you need to do in a raid, besides the standard raid activities such as tanking, healing, dps'ing, that will wipe a raid if you don't do it. It has to be something that you personally have to do that's special, and nobody can ever cover for you if you fail. So that rules out things like "stand in the right beam on Netherspite" because technically, someone else can stand in the beam too. "Don't die to Spout" doesn't count because it only affects you and doesn't necessarily wipe the raid.
Offhand, I can think of the following:
Shade of Aran: don't move during Flame Wreath, or the raid blows up
Leotheras the Blind: kill your Inner Demon or get mind controlled forever
Lady Vashj: pass or deposit a Tainted Core if you get one
Solarian: move away from the raid if you have Wrath of the Astromancer, or the raid blows up
Archimonde: use the Tears right or have fun cratering, giving Archimonde a Soul Charge
Teron Gorefiend: kill the constructs if you're a Ghost
-Bolty
