When we come back. Peter's actually putting nails into Sylar's hands. It's pretty graphic and disturbing, and Peter's loving it. He asks if it hurts, doesn't it, with no healing power. Then he puts a nail into Sylar's ... knee, perhaps? Peter wants to make a deal to get his brother back for good, but Sylar thinks it sounds pretty one-sided, and Peter's going to need a lot more nails in that thing. Peter throws the nail gun aside and says it's fine; he'll just take away everything in Sylar's brain until Nathan's the only thing left. Sylar would like to see him try. So he does. And that is actually not a bad idea. Sylar eventually becomes Nathan, and they smile and look happy, as Peter caresses Nathan's face. Neither of them mentions the fact that Nathan's nailed to a board, a la Jesus. Which you'd think would be one of the first things you'd notice if you came to after a period of time.