Sylar is going to be more than usually enraged when he regains his memories; and I imagine he'll kill Mama P. first.
I'm sad for Nathan, though. And another Tracy, how exciting - not .
I'm kinda wondering if it isn't the original Tracy; having the ability to freeze things could be an offshoot of a larger power over water, and we did see her wink just after her body shattered.
I have to admit, I'm really quite intrigued by the Sylar-into-Nathan twist. Hopefully the writers will use the opportunity to explore the question of identity—is our "self" essentially a result of our collected memories, or is there an underlying something that makes us who we are—instead of just teasing us each week with the possibility that Sylar will reemerge. Although given how the past two seasons have gone, I tend to fear it'll be the latter option... I'd also be curious to see how deeply, if at all, being Nathan might impact Sylar's character if he does reemerge—will he still be a murdering sociopath, or will the time spent as Nathan have an influence on Sylar's subsequent behavior?
Plus they'd written themselves into a real dead end with Sylar—establishing that he'd moved the kill spot in his head meant they had an all-powerful, invulnerable villain who could pretend to be anyone he wanted. Which doesn't make for a whole lot of drama overall. This is an interesting way to remove Sylar from the equation while still maintaining the option of bringing him back.
The Doctor: River Song, I could bloody kiss you! River: Oh well. Maybe when you're older.
The Doctor: Can I trust you, River Song? River: If you like. But where's the fun in that?