shavedape
Well Known GateFan
I only really noticed bagpipe music in the first season of BSG (IIRC, the episode where they attack the cylon asteroid base), and over the course of the series the only real constant I felt was there was the use of precussions. I don't even think there was that much, if any, bagpipe/irish/scottish influenced music after season 1 (except for the Adama theme). Mostly I think he tended to use more oriental themes (which is especially prominent in the season 4 score).
I'm sure they used the bagpipe music in the final season if not also in season 3. I remember it was later in the show but don't really have a desire to rewatch it all again just to see if I'm right.