OK I finished watching the original BSG pilot episode of the classic series. I'm ready to present my deconstruction.
At first glance, it's a telling of the 'ancient astronaut' theory, Erich Von Daniken style. Under the surface, it is an iteration of the archetype of the apocalyse.
The Council of Twelve and their respective Battlestars represent humanity as a whole at the end of an age. Baltar represents the social institutions of religion, he is appointed by 'providence'. Adama represents the shaman who bypasses the social institutions and recieves the 'revelation' (apocalyse as revelation) directly by descending into the 'underworld'.
The Galactica and the rag-tag fleet of 220 ships represents the 'total man', (22 as Master Builder) who desends into the underworld and Adama & crew represent his personality aspects. He desends into the underworld at the moment Starbuck builds the 'perfect pyramid' in his poker game and wins the gold.
They travel the underworld, pursuing and finding the 13th colony (13 as change) and then return from the underworld to the world of the living, and bring the 'elixer' or medicine to heal the Wasteland, resulting in a new heaven and a new earth. Classic shamanic formula of initiation, revelation, return.