Wow what an episode.
Unfortunately circumstances did not allow me to watch the episode until just now.
This isn't the first time Hiro has gone to an apocolyptic future, perhaps he can still go back and save everyone? Or perhaps the show will just pick up from Hiro's current storyline, that would be pretty awesome.
I'd be disapointed if subsequent seasons didn't deal with at least some of the main characters of this season (mainly, Claire, Peter, Hiro, and Nathan). If the Petrelli mom has powers, then it is likely that Linderman also does. So far everyone with powers has been below in Nathan and Peter's generation or younger. Perhaps Linderman really is Peter and Nathan's (or even just Nathan's) father and that's how she knows so much(and how their children and grandchildren have powers, but then do Nathan's legitimate children also have powers? We haven't seen them in awhile). Maybe the Petrelli mom is working against Linderman with her own organization! Hell hath no fury like a woman scorned.
I want this show to go on forever. Can no one see the potential of differing plots? Why does it all have to be about New York City blowing up? Is NYC the only major city in the world? Are there no other problems that can be faced? Can no new powers be created, the potential for a show like this is nearly limitless. As long they continue to do things in the manner in which they are currently doing them I see no reason for the show to continue until the inevitably "jump the shark". This is just like X-Men, what if they had decided oh well they stopped Apocalypse, let's stop now. No Phoenix saga, and all the other amazing things that took place during the series, people coming from the past and future to effect differnt mutants in various manners engaging in different arcs and stories all entertaining and flowing nicely within the main story.
I'm with the thought that Peter won't be able to completely to heal the wound that Sylar is about to give him, perhaps because of the intensity of it, or merely because Sylar will be able to do something to prevent him from healing it. I'm hoping for a showdown of the proportions of the nuclear episode with Claire having to inject the nuclear dude with the tranquilizer. I don't mind the breaks too much as long as they result in the break between seasons being shorter, giving the series a more continuous feeling.
As for the PS3 showing up, not surprising. They showed the original Gameboy then the PS3. Hiro and Ando were driving a Nissan Versa, the Haitian and Claire were in a Saturn Ion. Different sponsors get different things I suppose.
Edit: Clarified a thought.