I'm hoping the good Nikki died when DL phased into her chest. I think it'll improve her character. I got kinda annoyed at how often she'd morph between good and bad. I thought they should've just given her a doppelganger that could morph out of her.
It also annoyed me at the beginning that Claire would seemingly find a way to die everyday. I know the whole show isn't realistic, but I thought it was overkill(no pun intended) that she'd constantly get herself killed.
I'm curious as to how far in the future Future Hiro was. It's gotta be fairly distant seeing as he has mastered the english language and dropped the accent. Also, according to what Hiro said, Peter apparently gains a scar on his face at some point in the future. Hope they follow through well with the rest of the series.
If you've missed any episodes, you can watch them here:
http://tvlinks.voodeedoo.org/Heroes_links.html
The Sci-Fi Channel also re-airs the episodes.