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
Science Fiction/Double Feature A 1951 science fiction film based on the 1932 novel co-written by Philip Gordon Wylie and Edwin Balmer. The movie was filmed in Technicolor, directed by Rudolph Maté and was the winner of the 1951 Academy Award for special effects. George Pal was the producer of "When Worlds Collide" and the director of the 1953 film "War of the Worlds" and the 1960 "The Time Machine", among other films. Science Fiction/Double Feature "Science Fiction/Double Feature" is the opening song to the original 1973 musical stage production, "The Rocky Horror Show" as well as its 1975 film counterpart "The Rocky Horror