I think much of the success of "The Rifleman" TV series was due to the casting of Chuck Connors as the "hero." We quickly grew used to him in this part but at the time the series started, he was probably regarded by many casting directors as a "bad guy" -- such as the part he played in "The Big Country." There was something mean and menacing about him. But by casting him as the boy's father in "The Rifleman," the show used Connors' toughness to counteract the sentimentality that might otherwise have enveloped this series. (Can you imagine how syrupy "The Rifleman" would have been had Doug McClure played the lead?)