At Touchstone Magazine's Mere Comments blog, Anthony Esolen lists his top 11 Christian television shows, including:

2. Gunsmoke.  This show started off great, and got better as the seasons went on; the very best episodes are those of its second decade, in color, with Ken Curtis as Festus, the wise fool and television's greatest sidekick.  Yes, there were saloon girls, and yes, Miss Kitty was (in the early shows especially) obviously Matt Dillon's woman.  But it is hard to find a show more affirmative of the holiness of marriage, or the need to uphold the law, or the terrible beauty of a man willing to put his life on the line  for his fellows -- and often his unappreciative fellows.  Possibly the greatest show in television history, or it would be, were it not for

1. The Twilight Zone.  Not science fiction, this!  These were half-hour morality plays, laying bare the shame of man, but also celebrating his dignity.  Rod Serling was a liberal back in the day when that meant an uncompromising affirmation of the value of every individual, including the weakest and the least among us, as against the brazen claims of technocrats, social engineers of the right and the left, and the power of brute nature.  The writing ranges from very good to stupendous, as does the acting -- by an astonishing medley of old stars (Gladys Cooper, Buster Keaton, Cedric Hardwicke), new stars (Lee Marvin, Robert Redford, Anne Francis, Dennis Weaver, Cliff Robertson), and incomparable character actors (Burgess Meredith, Nehemiah Persoff, Jeannette Nolan, Jack Klugman, Jack Warden, John Dehner, John Anderson).  A down-and-out boxer who can't believe; a young woman who doesn't want to be made pretty; a man stranded alone on a planet; a little boy who wants everybody to think only happy thoughts --it seems that there was not a single human situation that this show did not probe. 

Here's the entire list.