Science fiction has long been stereotyped as a hardware-obsessed, techno-jargon laden refuge for computer nerds and outcasts. Especially on television, which lacks the geek chic afforded by big-screen Hollywood budgets, the genre's reputation for hokey dialog and cardboard-and-wire effects have saturated it with a distinct odor of disrespectability. It is somewhat ironic, then, to see the Sci-Fi Channel, a network which often seems devoted to the pulpy and lowbrow, serve up Battlestar Galactica, a show about spaceships and killer robots that is also arguably the most potent, dramatically vibrant series on television. An unflinching examination of how the military, government,...