James Arness, who passed away June 3, 2011 at age 88, was a great actor and a great American. If I'm not mistaken, he was the only cast member to last the entire 20-year run of the series. He was preceded in death by Milburn Stone (Doc), Amanda Blake (Kitty), Dennis Weaver (Chester), and Ken Curtis (Festus). Buck Taylor, who joined the cast in about its 13th season as Newly, still remains, hopefully for many more years. So long, Marshal Dillon!