I think Sylar's powers didn't work in the room because the Haitian was always there when glasses man was, blocking his powers. Then when Eden went in, the Haitian was at Claire's, so she was not protected from his powers. That's just my theory anyway. How Sylar was able to resist her I dont know.
Oh and I loved the feedback effect of the cop and Peter, that was great
I have so many questions too, and I figure they will answer them in January, but here are some:
1. Why is Peter getting sick and what with? Is it just a normal cold or something more ominous?
2. Why did Peter have those dreams? It seems his powers come from being around others with powers, so the dreams seem kinda out of place to me. Or maybe he retains some latent powers from each of his encounters, and Isaac's power is trying to push through in his dreams?
3. Why is the Haitian going against his boss about Claire? What does he know?
I'm sure there's more rumbling around in my head, but those are the 3 I thought of right off.
Oh and Vince, I think he was dreaming Isaac's girlfriend because she's sorta become Peter's girlfriend. Or at least she's emotionally involved with him. I get your Dune reference but not in regards to who was killed... ?