In an interview with Rachel Thomas, About.com Guide to TV Dramas, Katey talks about her thoughts on Lost:
Q: Were you an fan of Lost before you got the role?
Katey: "Yes! I watched from the beginning."
Q: How did you enjoy working with Terry O'Quinn?
Katey: "Oh yes, he's such a great guy. He's a really kind person, very giving as an actor."
Q: Will you come back for the final season?
Katey: "I don't know, I'm not sure if I'm really supposed to answer that question."
Q: Do you have any theories about how the show will end?
Katey: "I don't know, every once in a while I think I understand what's happening, but all the time shifts...is the island heaven? I have no clue, it's just fascinating to watch. I think the characters are really interesting, it's a compelling show to watch. I don't know exactly what I'm really watching sometimes, I just really like to watch it. I wonder if they (TPTB) do."
Read the rest of the interview at TVDramas.about.com: An Interview with Katey Sagal (Gemma), Sons of Anarchy).