Molly's powers seem similar to Sylar in that she can sense others with powers, but her's goes a step further by actually locating them. On a side note, does someone's powers have to be functional for Peter to absorb them? If not, if he came in contact with her, her power's would not be lost.

Sylar seems to be under the impression that he will or at least will gain the ability to destroy the city. And while he had no problems killing people with powers because he doesn't believe they deserve them, he in uneasy about killing innocent people unless it profits him. But the whole killing-his-mother thing may have made him even more unhinged.

Since Peter did it in the future and all visions point to him going boom, it's safe to say he does it. Unless Claire manages to put one in the back of his head in time. There's also Sylars newfound psycoticness. Before he just seemed egotistical and amoral, now he just appears crazy.

Issac died with dignity, his sacrifice would have been for naught if he survives. If his death wasn't necessary or at least permenant, I don't think he would have prepared himself for it.

And I hope Micah does something to that illusion chick. She gets on my last nerve.