Science fiction fandom other groups including LGBT communities, libertarians, neo-pagans, and space activist groups like the L5 Society, among many others. Some groups exist almost entirely within fandom but are distinct and cohesive subcultures in their own rights, such as filkers, costumers, and convention runners (sometimes called "SMOFs"). Fandom encompasses subsets of fans that are principally interested in a single writer or subgenre, such as Tolkien fandom, and ("Trekkies"). Even short-lived television series may have dedicated followings, such as the fans of Joss Whedon's "Firefly" television series and movie "Serenity", known as Browncoats. Participation in science fiction fandom often overlaps with other similar
Vows (Dollhouse) and complex material this show has dealt with so far, all of which is terrifically performed by Amy Acker." When originally broadcast, "Vows" was viewed by 2.56 million viewers, down 41% from the series premiere, but almost on par with the first season finale, which was broadcast in May 2009. It received a 1.0/3 ratings share among adults 18-49. Vows (Dollhouse) "Vows" is the premiere of the second season of the American science fiction television series "Dollhouse" and the show's 14th episode overall. The episode was written and directed by series creator and executive producer Joss Whedon, and aired in