Even Gunsmoke star James Arness was taken aback by John Wayne's unexpected cameo on the long-running Western TV program.

TV-Movies based on the popular series "Gunsmoke", in which the main character, Matt Dillon is again played by James Arness.

Others in the cast include Aldis Hodge, Storm Reid and Michael Dorman. The 20th and final season of the long-running western series Gunsmoke occurred in 1974-75 and included 24 episodes (approximately ...