The New York Times has an article about Razor, and other shows besides Battlestar Galactica that have used DVD sales to their advantage.
The episode, “Razor,” marks yet another step in the complex, fast-changing relationship between DVD sales and cable broadcast. The episode would not exist except for the promise of selling it on DVD just days after it is shown on television.
The move is part of a trend. Already there have been instances of DVD sales reviving canceled television series, like Fox’s “Family Guy,” which sold so well that it was put back on the air. And “24,” also on Fox, began selling DVDs of its four-episode season premiere earlier this year, the day after it concluded. But such tactics are still rare.
“‘Battlestar’ is incredibly successful both domestically and internationally in terms of DVD episodes,” said David Howe, executive vice president and general manager of the Sci Fi Channel. DVD sales are especially important for shows like “Battlestar” that are intensely serialized, meaning that a casual viewer might have a hard time understanding a random episode. That makes the series less inviting in syndication than, say, “Law & Order.”
“You can’t strip them from all scheduling in a way that allows people to dip in and out,” Mr. Howe said.
Sci Fi also took the unusual step, for a television show, of screening “Razor” in movie theaters in eight cities around the country this month. Mr. Howe said the screenings, sponsored by Microsoft, led to lines “around the block” at participating theaters, two of them in Manhattan.
And there's this bit of info:
As with many television shows, production of the “Battlestar” series is hobbled by the writers’ strike. The first half of the forthcoming season is unaffected, Mr. Howe said, but the second half could be delayed.