Sadly, I have to be added to the list of those who hated this episode. It seemed calculated precisely to annoy me.
Twice during the first half of the episode, I wanted to shout, "Get on with it!" at the screen. Other than Nathan's conversion to the dark side, it seemed mostly to consist of characters moving around but not really accomplishing anything. Plus, we got more of the Hiro Nakamura character-assassination storyline. Excellent.
Plus, the whole Nathan thing doesn't feel right. Surely he should realise that the answer to bad people with powers isn't to give a whole bunch of other people that you ultimately can't control more powers. That's just going to leave all the same problems in society, only now made even less stable because the power level has gone up. Then there's the whole "I'm taking over"/"Okay then" thing, which was too easy and too quick, especially when Arthur should have gained Matt's mind-control power from Peter. Not to mention Nathan's whole acceptance of Tracy's betraying, rather than firing her on the spot (even if he did switch sides himself, she still went behind his back, thus demonstrating that he can't trust her). So, I didn't much like that.
We then get a whole bunch of character scenes with Claire and her parents, and Hiro and his mother. That was mostly okay - I would have preferred to skip them, but if the show is about characters then we really should see the characters interacting. Plus, if we get to a point where the Claire/HRG issues can be put to bed, that will be a good thing.
So, Hiro gets his memory back. Excellent, we can drop this stupid plotline, get the story moving again. Oh, and he takes the catalyst. Probably not smart, but then he can teleport with a blink, so he's unlikely to be captured and held for long... oh.
In this season, Hiro has managed to lose both halves of the formula to the bad guy, and now has lost the catalyst. In fact, the only time when he hasn't been screwing up really badly is when he was saddled with acting like a child. Yeah, that sucks. (Although, actually, if he was at all smart, Hiro can now save the world in two easy steps. Once he gets off the flagpole, all he needs to do is identify himself to his father, explain just how badly he screwed up, and have his father burn his half of the formula. Problem solved.)
I was fairly stunned, however, when Peter actually shot his father. Bet he's back, though.
Unfortunately, I'm done with this show. As far as I can see, the best possible ending for next week's episode has Hiro waking up in a cold sweat, and then calming down because "it was all a dream". I really hate Reset Button endings, but I think it may be necessary this time.
I'm going to give this show until January to sort itself out. However, there will then be a handful of other shows that I enjoy starting up so I'll be looking to drop some. "Fringe" was on the shopping block, but has recently improved drastically, but if "Heroes" doesn't come together very quickly, it will be gone.