Chuck, Life, Fringe, Kings, Terminator should all be renewed without question IMO.
Fringe started out slow, but has gotten much much better recently and is worth keeping on air (and it reminds me so much of the x-files i dont want it to go away yet).
Chuck is a great show, the tension between chuck and Sarah and the crazy antics of the buymore crew are hysterical.
From what I have seen of Life it looks like a good show, I only watched Terminator in the beginning and it was ok, apparently it has gotten better. And if the first episode of Kings is any indication of where the series is headed then it would be a big mistake to not renew.
oh and Dollhouse.... ugh, I had such high hopes for this show. I mean it could be good, but every time an episode gets remotely interesting it somehow gets sabotaged by itself. That and the fact that the main character is a different person in every episode doesn't help maintain continuity. They need to define characters and roles and maybe they can salvage the show.