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
Joss Whedon compromise than film: In August 2012, Whedon signed a deal to develop the Marvel TV show "Agents of S.H.I.E.L.D." for ABC. The series focuses on the secret military law-enforcement agency featured throughout the Marvel Cinematic Universe. Created by Whedon, Jed Whedon and Maurissa Tancharoen, the show involves individuals who possess powers within the spectacle of science fiction, while also focusing on "the peripheral people ... the people on the edges of the grand adventures". The character Phil Coulson was resurrected after his death in "The Avengers" to helm the show. Whedon spoke about certain complications that factored in with making