SPOILER
Jennifer: A case could be made for the survival of both Nathan and Peter.
Getting enough height, Nathan could release Peter and get away from the pending explosion. Peter could explode, but then regenerate the way everyone figured he would anyway.
Re: The ending of one chapter and the beginning of another -- I LOVED it...here was Hiro fulfilling his destiny and then blinking his way out of slamming into a building. We at last discover where he went. We know he has "control" issues...so...here he performed a major heroic act in the kensei tradition, and then he blinks himself back nearly 500 years into the middle of a feudal conflict. It could not have BEEN more perfect, IMO.
Parkman's fate is in the hands of the EMTs at this point.
Sylar apparently skulked into the sewer system. All we saw was a blood trail where his body had been.
I'm more worried about D.L., although it seems he MAY survive.