Hmm, How did Future Claire kill future Peter? - Peter is as Immortal, like the highlander :) Unless something happened in the missing 4 years but they certainly didn't explain it, unless I missed something.

He's died several times onscreen and ALWAYS bounced back...

EDIT: Nevermind, I'd forgot the haitian was there!

Who's got a crackpot Mohinder theory? i'm betting he's either become Mohinder the lizard for real or something akin to Uluru :)

Funny that Sylar is finally normal when the rest of the world is so messed up.