his avowed weariness, Serling again managed to produce several teleplays that are widely regarded as classics, including "It's a Good Life", "To Serve Man", "Little Girl Lost" and "Five Characters in Search of an Exit". Scripts by Montgomery Pittman and Earl Hamner, Jr. supplemented Matheson and Beaumont's output, and George Clayton Johnson submitted three teleplays that examined complex themes. The episode "I Sing the Body Electric" was contributed by sci-fi writer Ray Bradbury. By the end of the season, the series had reached over 100 episodes. The Twilight Zone received two Emmy nominations (for cinematography and art design), but was awarded neither. It again received the Hugo Award for "Best Dramatic Presentation", making it the only three-time recipient until it was tied by Doctor Who in 2008. In spring 1962, The Twilight Zone was late in finding a sponsor for its fourth season and was replaced on CBS's fall schedule with a new hour-long situation comedy called Fair Exchange. In the confusion that followed this apparent cancellation, producer Buck Houghton left the series for a position at Four Star Productions. Serling meanwhile accepted a teaching post at Antioch College, his alma mater. Though the series was eventually renewed, Serling's contribution as executive producer decreased in its final seasons. Season 4 (1963) In November 1962, CBS contracted Twilight Zone (now sans The) as a mid-season January replacement for Fair Exchange, the very show that replaced it in the September 1962 schedule. In order to fill the Fair Exchange time slot, each episode had to be expanded to an hour, an idea which did not sit well with Serling, nor the production crew. "Ours is the perfect half-hour show... If we went to an hour, we'd have to fleshen our stories, soap opera style. Viewers could watch fifteen minutes without knowing whether they were in a Twilight Zone or Desilu Playhouse," Serling responded. Herbert Hirschman was hired to replace long-time producer Buck Houghton. One of Hirschman's first decisions was to direct a new opening sequence, this one illustrating a door, eye, window and other objects suspended in space. His second task was to find and produce quality scripts. Sponsors included Johnson & Johnson. This season of Twilight Zone once again turned to the reliable trio of Serling, Matheson and Beaumont. However, Serling's input was limited this season; he still provided the majority of the teleplays, but as executive producer, he was virtually