Weak. I especially dislike the crazy god angle and Claire's crazy, amazingly idiotic "I can't feel pain and since I'm invulnerable there's no reason to anyway so I must not be HUMAN and I don't have SOOUULLLL WAAAAH!!" nonsense. I'm also even more confused on what exactly Sylar did to her brain. Especially considering that shoving a stick in her brain, even if it didn't kill her, certainly knocked her out enough to look dead until it was removed. It also doesn't explain how this would mean she can live through it, but nobody else can. I doubt it's just because of blood loss and it still doesn't explain the missing brains from the past.
The way that it's obviously ripping off Days of Future Past is just... well, even worse than last season's Legacy Virus knock-off.
I have to agree with the nay-sayers it's barely two episodes in and I'm already a bit confused, angry at the characters (and more so at the writers), and not really excited about seeing further episodes. It seems like TV shows these days are able to get one really good season out, but quickly start falling apart right after that: Heroes, Lost, My Name Is Earl, The Riches, Battlestar Galactica (it took longer than the others, but it's definitely been post-shark for a while now).... House doesn't count because it was formulaic from the start and just took me time to quickly get tired of it. Prison Break couldn't even sustain interest for an entire season (I can't fathom why I bothered to finish season two). The shows that do succeed (30 Rock, It's Always Sunny in Philadelphia) seem to be comedies however. I wonder if that has anything to do with it.