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
Jed Whedon vocals on "Second Nature" and "Mr. Electric" and Sam Whedon playing guitar on "Dangerous". In contrast to most of Jed's other music, lyrics are credited to Maurissa first on this record. The following year, both he and his wife sang on Joss' original score for his movie Much Ado About Nothing. Whedon worked with his wife (Maurissa) and brother, Joss, on "The Avengers". He and Maurissa are currently showrunners, producers, and writers for the ABC show Marvel's "Agents of S.H.I.E.L.D.". In 2016 his band, Jed Whedon and the Willing, released their second studio album, an EP titled "Like Snow" with