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
The Man Who Was Thursday in January 1967 that Jerome Hellman and Arthur P. Jacobs' APJAC Productions were preparing movie projects including a musical adaptation of Chesterton's novel by Leslie Bricusse. The film was not made. There have been at least two adaptations broadcast by BBC radio over the years. In 1986 the BBC broadcast a four-part series dramatised by Peter Buckman and directed by Glyn Dearman. It featured Michael Hadley as Thursday/Gabriel Syme, Natasha Pyne as Rosamond and Edward de Souza as Wednesday/The Marquis de St. Eustache. The episodes were titled: In 2005 the BBC broadcast the novel as read by Geoffrey Palmer, as