A show like "Battlestar Galactica" is hard on its fans: Between bouts of intense love and feverish speculation, you mainly have to wait. The last season ended in March. The next one won't start until April, at least. Slowly, the hours tick by.
So the two-hour movie "Battlestar Galactica: Razor," which premieres on SciFi tomorrow night at 9, functions mainly as a fortified snack, to tide over the viewing faithful until the show's fourth and final season begins. It's also an unapologetically insider affair: A casual viewer would probably be lost in the eddies of backstory and mythology. (For the most intense fans, SciFi offered a series of preview screenings in movie theaters around the country earlier this month. And of course, "Razor" will soon be available on DVD.)