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 Theatre Science Fiction Theatre Science Fiction Theatre is an American science fiction anthology series syndicated and broadcast from 1955 to 1957. It was produced by Ivan Tors and Maurice Ziv. A total of 78 episodes were produced. Hosted by Truman Bradley, a radio/tv announcer and 1940s film actor, each episode introduced stories which had an extrapolated scientific or pseudo scientific emphasis based on actual scientific data available at the time. Typically, the stories related to the life or work of scientists, engineers, inventors, and explorers. The program concentrated on such concepts as space flight, robots, telepathy, flying saucers, time travel, and