Joss Whedon's Serenity (2005) is at once a symbol of failure and a triumphant success of fan activism. The cult television icon's feature directorial debut functions as an extension of his canceled Fox series Firefly. Mourning their loss, fans of the show fought for more, making Serenity not just a cult film but a monument to cultdom. A minor box-office success upon first release, Serenity continues to be a sci-fi favorite,...