Television:
* Gunsmoke (1955-1975): This iconic Western series cemented Arness's place in television history as the stoic and righteous Marshal Dillon. He starred in all 20 seasons, making it one of the longest-running television shows in history.
* The Thing (1958): This sci-fi horror film marked a departure from Arness's Western persona. He played the monstrous alien creature, with only his towering height and a distinctive voice recognizable through the prosthetic makeup.
* The Big Valley (1965-1969): After "Gunsmoke" concluded, Arness starred in this Western series as Jarrod Barkley, the patriarch of a family living in California's San Joaquin Valley.
* How the West Was Won (1977-1979): Arness reprised his role as "Matt Dillon" in this miniseries, which depicted the westward expansion of the United States.
Films:
* The Thing That Couldn't Die (1958): Another horror film, with Arness playing a doctor who is resurrected by an evil scientist.
* The Alamo (1960): Arness starred as Davy Crockett in this epic historical drama, alongside John Wayne as William Barret Travis.
* The Gunfighters (1960): This Western film features Arness as a gunfighter forced to confront his past.
* The Red Badge of Courage (1951): An early film for Arness, where he played Henry Fleming, a young Union soldier during the Civil War.
Other notable projects:
* "The Virginian" (1962-1971): Arness guest-starred in multiple episodes of this popular Western series.
* "The Cowboys" (1972): A Western film that showcased Arness's rugged charm and acting ability.
This is a partial list, and James Arness appeared in many other films and television shows throughout his career. He remains an iconic figure in Western cinema and television.