A few months ago I watched the entirety of Star Trek: Deep Space 9 on Netflix and I was pretty struck by how many of the ideas found on BSG (especially related to spiritualism, identity, predestination, the cyclical nature of the universe and other such themes) Ronald D. Moore worked into that show as a writer. In fact, a LOT of the episodes he wrote or had input on almost seem like a dry run for what he would do on Battlestar Galactica. Obviously BSG is much more dark and less pulpy than a Star Trek series, but the ideas are absolutely there and pretty recognizable if you've watched both series.