The show's not bad, and when I'm watching it, it's fine, but I find it's not really holding my interest. I really don't remember any of the names of the characters, and I pretty much don't care about any of them, except maybe for the hot lesbian chick. But that's only because I want to see her make out with another hot chick again.
It does raise some interesting questions about how mutable the future is. I guess the biggest question I have is about whether Claire will still be alive on 30 April or if the universe will compensate for the agent's rather drastic action and she'll still get killed, just by someone or something else.