text: Commercial channels pour programs down from the heavens that match or surpass the products of the public broadcasters , who are too cowed to produce anything as homo-proud as the new Ellen , as racy as Brooklyn South , or as culturally subversive as The Larry Sanders Show . I ask you , what PBS newsman out-wings the liberal Peter Jennings ?
  
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  Public channels feel free to push the envelope in terms of content unlike commercial channels .