John Meston and refined the main characters who would populate his and Macdonnell's radio portrayal of Dodge. Jeff Spain soon became United States Marshal Matt Dillon, and veteran voice actor William Conrad was chosen by Meston, Macdonnell, and two other network audition judges to be the lawman and the series' central figure. Other seasoned actors filled the needed regular supporting roles, including Parley Baer as Marshal Dillon's trusty assistant Chester Proudfoot, Howard McNear as Dr. Charles "Doc" Adams, and Georgia Ellis, whose role in the series' early episodes would quickly evolve into the saloon "hostess" Kitty Russell. "Gunsmoke" was broadcast for the
Gunsmoke programs, i.e. produced outside the U.S., have been broadcast in the U.S. and contend for the position as the longest-running series. , "Gunsmoke" was rated fourth globally, after "Doctor Who" (1963–89, 2005–present), "Taggart" (1983–2010), and "The Bill" (1984–2010). James Arness and Milburn Stone portrayed their "Gunsmoke" characters for 20 consecutive years, a feat later matched by Kelsey Grammer as the character Frasier Crane, but over two half-hour sitcoms ("Cheers" and "Frasier"). George Walsh, the announcer for "Gunsmoke", began in 1952 on radio's "Gunsmoke" and continued until television's "Gunsmoke" was canceled in 1975. The first seven seasons were jointly sponsored by