I loved last night's episode! Next week's looks even better! Here are my thoughts:
Hiro: The waitress was able to speak Japanese perfectly. She said that someone gave her a Japanese book at her birthday party 6months ago. I feel that it was Hiro who gave her that book. We see that he is now in the B'day party picture with her when previously she was alone. Does he save her? I'm not sure but as Mohinder said at the end (voiceover) you cannot escape from Destiny. Also, was she the one who taught him perfect English? I am not a scholar of time travel, continuums, rifts, etc but anytime Hiro does this it will effect the present in some way.
Sylar: I don't think he knew of Hiro's powers yet or else he would have targeted him. The waitress was openly speaking of her new found ability so he went after her. He's scary but I was glad to have him in this episode!
Ando: I like him. I hope he survives it all.
Mohinder

(swoon) Gosh, he sure is sexy! That accent of his just tops it! Err, uh, yeah um back to my "thoughts." It was very interesting to learn that he had a sister. Obviously this sister had a gift as well. I wonder what it was and how did she die? I really liked the dream sequences they had with him although I felt bad that he had to see his father's murder. We see the "watch" so it was Sylar who did it. I wonder why it wasn't as quick a death as the waitress? Maybe he is learning his "powers" as well?
Eden; I think, if she does have powers, it is like the power of suggestion or hypnotic words, something like that. She whispered in Issac's ear and he actually let her shoot him up.

Also she knew that Mohinder would return. She said this to Mr.Bennett. Did she whisper for him to return?
Mr. Bennett. Hmmm. I'm still not sure about him. He wants to save his daughter by any means necessary. It seems as if he captures the heroes, "tags" them maybe (cop, radioactive man), does I dunnowhat and releases them. After their powers increase. What is his master plan? I do not think he works with Sylar and how does the Haitian fit into all of this?
The key is 6 months ago, when everything changed in the lives of the "heroes". I cannot wait to see how it unfolds next!
If you go to page #21 I posted some interesting tidbits of the show. It is not airing all in one episode but it was cool to look over it just now. There will be an episode titled "Six Months Ago" coming up.