We recently watched The Plan, a film offshoot of the reimagined Battlestar Galactica television show. As fans of the show, we enjoyed it; it added some details and filled in some plot holes from the regular series. Someone who has never seen the show, on the other hand, would probably be lost.
The BSG franchise has many tragic elements, and The Plan focuses on several; genocide, betrayal and mistrust feature prominently. They continue to be eclipsed, however, by the sense of sadness I feel about the end of the series.
Next on the schedule is a re-viewing of Battlestar Galactica: Razor. After I watched it for the first time, it crystallized my view that in the series, the humans are the bad guys and the Cylons are actually the good guys. Seasons 3 and 4 added this refinement: the Cylon "skinjobs" (who look like humans) are also bad guys, leaving only the robot-like Centurions to be proper protagonists. Razor is much more accessible to non-fans, and I'm curious if any have seen it before seeing the rest of the show.