Joss Whedon's space-cowboy series "Firefly" almost seemed like it was doomed from the start. Fox frequently changed the show's time slot or preempted it for other programming. It even aired episodes out of order. The sci-fi series only ran for a single season, and Fox canceled it before all 13 episodes aired.
Despite its bad time slots and rocky scheduling, "Firefly" built a strong fan base, and when Fox released the entire 13-episode series on DVD, sales were through the roof. Stores sold out of the DVD as quickly as they could stock the shelves. Fans of the show, who call themselves "Browncoats" after the rebel fighters from the show's backstory, played a big part in getting DVDs on the shelves. The Browncoats campaigned Fox with online petitions, e-mails and letters.
While Fox didn't bring "Firefly" back from cancellation, Universal Pictures saw the DVD sales and offered Whedon the chance to make "Serenity," a movie to wrap up the series' story line. "Serenity" came out in fall of 2005 with less than stellar box office numbers. But while the $39 million film failed to break even in the theaters, it did very well as a DVD. "Serenity" ranked No. 1 on Amazon's best-seller list the year it came out. There have been several rumors of a "Serenity" sequel, but so far no studio has officially announced one.