I think the show also directly hinted that to us that Sylar is from the future. The fact that the show focused on his stopped watch twice, and that we hear a pretty loud ticking clock sound when we first see him in the diner seems like a good indication that he has something to do with time.
My initial thought is that "7 minutes to midnight" (the name of the episode, and the time on Sylar's watch) was referring to the time that the nuclear blast happens.... but that might not jive with the future that Hiro was a part of, so who knows.
And the fact that they're keeping Sylar's face hidden seems like a signal that we've met him before, as another character... but I don't think it's Hiro. Here's a screencap for reference:
Tough call. Definitely caucasion... Peter seems like the only real choice, i guess.
This show has me hooked.
worst part of the episode: the scene where HRG and Persuado-Girl argued. their powers suddenly switched to overacting.