Book excerpt: This book gathers together many of the illuminating essays on science fiction and fantasy film penned by a major critic in the SF field. The pieces are roughly organized in the chronological order of when the movies and television programs being discussed first appeared, with essays providing more general overviews clustered near the beginning and end of the volume, to provide the overall aura of a historical survey. Although this book does not pretend to provide a comprehensive history of science fiction and fantasy films, it does intermingle analyses of films and TV programs with some discussions of related plays, novels, stories, and comic books, particularly in the essays on This Island Earth and 2001: A Space Odyssey and its sequels. Inciteful, entertaining, and full of intelligent and witty observations about science fiction and its sometimes curious relationship with the visual media, these essays will both delight and entertain critics, fans, and viewers alike.