In 1964, Steina Vasulka (then Steinunn Bjarnadottir) married Woody Vasulka, a Czech engineer with a background in film. They later moved to New York where, with Andreas Mannik, they founded the Kitchen, a performance space dedicated to new media. The Vasulkas collaborated on a series of video works whose imagery arose primarily through the manipulation of the video signal at the level of the electron beam itself. This masterfully constructed documentary by Peter Kirby gives insight into the pioneering impact of their lives and work. A must-see for any follower of electronic media.