I just discovered this interview with Ron Moore (producer of Battlestar Galactica) on the religious component to the show (HT: Greenflame). If you're a fan, the whole thing is worth reading; here's an excerpt:
Do your own religious views shape the story lines?Funny how he still calls himself a non-practicing Catholic, even when he has since moved "to atheism to agnosticism to interest in Eastern religions...."
I'm an Irish Catholic, not practicing. It probably just reflects my interest in my movement from Catholicism to atheism to agnosticism to interest in Eastern religions. I think the show is a reflection of my acknowledgement that faith and religion are a part of the human experience, even if I'm not quite clear on exactly what it all means and what I truly believe. The most direct reflection of me in the show is this idea that when the Cylons became self-aware, when they became sentient, when they became people, they began to ask themselves the existential questions: "Why am I here? What is this all about? Is this all that I am? Is there something more?"
My view is that that's fundamental to a thinking person. And that inevitably leads you to questions of faith and religion and "what will happen to me when I die?"