Heroes, Season 3, ep 25

I can understand that there will be casualties but are we supposed to completely forget things? Why didn't they just bring Clair up and pump some of her blood back into Nathan like they did last time he died? Sure beats this crap of making Sylar believing that he was Nathan and burning Nathans's body. Huge freaking plot hole.

I have been patient. I have been a fan, and hoping that they would get this back on track. But this is an nth degree from being history for me.