The form is so elemental, so basic, that we have difficulty imagining a time before it existed: a single set, fixed cameras, canned laughter, zany sidekicks, quirky family antics. Obsessively watched and critically ignored, sitcoms were a distraction, a gentle lullaby of a kinder, gentler America--until suddenly the artificial boundary between the world and television entertainment collapsed. In this book we can watch the growth of the sitcom, following...