It's been implied that Kensai is Hiro's ancestor, so I wouldn't be surprised if George Takei is the actor for him...
Meanwhile, the dreams that Peter has I'm going to pin, at long last, on Charles Deveaux, I think. Peter was unconscious during that little ditty...
I was thrilled how they showed how the future-painting stuff worked. They paint over what they see on the canvas to preserve it. Nice.
Meanwhile, my assumption is that Peter would have gone nuclear if he tried to fly away by himself, or accessed any other power at the time.
As for Hiro ending up in feudal Japan, his teleportation was much more panicked than any of his previous, I think. Sylar freezing his katana, sure, that's horrible, but being flung upwards towards a building and certain death...
Great how everyone came together. Wooo Niki! I hope Parkman survives, that was pretty brutal...