Yeah that's really really intriguing. I get the feeling Sylar is in Peter right now, because of what you say, and because it would make more a much more interesting storyline. Nathan looked pretty sincere at the end of the episode, and Peter was really trying to play down what he was saying, almost like to get rid of any suspicion Sylar is still alive PERIOD.

Also, it's a great thing Samuel's motives are FINALLY revealed; he could be a very treacherous villain for the heroes, and I'm eager for next week's ep!