A dramatic offering, all of it done live, the show featured everything from Shakespeare to Rod Serling; it was at the center of what critics would come to call television's Golden Age. During commercials for Kraft products ("Good food and good food ideas," Mr. Herlihy would say), audiences heard only his voice, a voice he said he tried to make sound friendly. It was an avuncular, next-door-neighbor, deep, mellow kind of voice, a digestive guide through the preparation of all manner of souffles, dips, marshmallow salads and fondues. He was noted for his ability to ad lib through commercials when dramatic presentations ran too long or too short.