Mark Pellegrino's interview with Tv guide (some spoilers)

TVGuide.com: Last night's Lost was quite the head scratcher.
Pellegrino: I've been hearing that. I've been hearing quite a bit about that. [Laughs]

TVGuide.com: A lot of fans griped after the episode because they still felt confused about the mythology. Will there be more explanation in the last few episodes?
Pellegrino: There will be. There will be some ends tied, but I can't guarantee that for everyone. People have been debating the meaning of the show and the various subplots for years, and I wonder if all of the questions are going to be answered. That's a tall order, but I think many people will be satisfied.

TVGuide.com: All along we thought Jacob was a good guy, but he's not as good as we thought.
Pellegrino: On a certain level, the line between good and evil has an indistinctive blurring. I think there's a lot of crossover in the show. That doesn't necessarily mean that I'm not good, though. Things will become clearer in the next episode, definitely. I think you'll make up your mind one way or the other for sure, but it's not going to be clean and pristine. You'll definitely come down on one side or the other.

TVGuide.com: How did Jacob go from a mama's boy to a man of confidence?
Pellegrino: I think there's a transformation that takes place when my mother gives me the wine. It opens certain doors for me. I think living for almost 2000 years — just the simple act of living, thinking and turning over ideas — can lead, hopefully, to a kind of wisdom.

more of the interview here : tv guide interview