Heading into its fourth, final, and (perhaps!) greatest season, BSG remains at heart a gripping parable for our anxious age, turning the religious zealots, military hawks, politicians, and terrorists from the daily news into searing, allegorical television. We know, it sounds like not getting laid for a few months. But while it lacks laser blasters, this hottie-stocked, Peabody-winning drama delivers easy payloads aplenty. It is, in other words, no mere nerdgasm.