Product and Pitch Advice from the Man Who Turned Television into Sellevision The Ginsu Knife, the Great Wok of China, the Food Saver, Tony Little's Ab Isolator--all have sold millions and have become household names thanks to Kevin Harrington's insightful vision to bring the traveling salesman's pitch to television. Since the late 1980s when Harrington's first infomercial aired, the extended commercial, or infomercial, has become a social institution...