So my VCR timer concked out on me last night, but thankfully, I found someone who had Tivo'd it, and it was awesome!!!
We finally have confirmation of a Sylar/Peter faceoff, even if we do have to wait weeks for it. I feel confident that Peter and Mohinder are going to be OK. Otherwise, Mohinder would already be dead.
I was predicting when I saw Simone in the commercials that it was really a shapeshifter. I agree that her character was a little stale to me, so I'm not super broken up that it wasn't her.
Sylar got Mohinder monologuing, anyone who has seen the Incredibles knows that's a bad idea

Glad Niki is back. It looks like she might become more interesting now that she's connecting with the other characters.
It was starting to be interesting to see Mrs Bennett having some depth to her, it's just too bad that it ended up being a trap. I wonder what happened to her, and what's going to happen to HRG now.
Yay, Ando came back!! I thought he would. What a great scene! Can't wait to see how they figure out how to stop the bomb.
The whole Grandma twist was quite a shock to me, too. It stands to reason that either Grandma or Grandpa Petrelli had powers. I'm guessing that it's Grandma, since she knew enough to try and protect Claire. This could explain the connection to Linderman, since Mr Petrelli was working for him.