Histories of science fiction often dicuss Fritz Lang's Metropolis as a classic work within the genre-yet the term "science fiction" had not been invented at the time of the film's release. If the genre did not have a name, did it exist? Does retroactive assignment to a genre change our understanding of a film? Do films shift in meaning and status as the name of a genre changes meaning over time? These provocative questions are at the heart of this book, whose thirteen essays examine the varying constructions of genre within film, television, and other entertainment media. Collectively, the authors argue that generic labels are largely irrelevant or even detrimental to the works to which they are applied.