I still think Sam may have real faith--it's been tested plenty of times but I think he does genuinely believe in a higher power, and in one for good. Dean doesn't. Which makes this even more interesting because Dean will constantly question what Castiel tells him, something no true believer would do.

Yeah, Sam can get very dark. And yes, he's still seriously messed up from everything. I agree we're going to see a lot more of that as the season goes on.

I would hate it if they killed Bobby but I also don't want him in every episode. He works better as someone they turn to every once in a while and vice-versa. Make him a regular and he loses his edge. (Can we say Gunn on Angel? I knew we could.)