He enjoyed a long career, working steadily in supporting roles in a diverse array of films, including Woman on the Run, D-Day the Sixth of June, The Beast from 20,000 Fathoms, Tarantula!, Wild Seed, Kelly's Heroes, Skyjacked and The Towering Inferno.

[8] In 1971, Elliott was invited to membership in the Actors Branch of the Academy of Motion Picture Arts and Sciences, later serving on its Board, and remaining a member until his death in 1999.

[citation needed] Throughout his career, Elliott appeared in more than 200 television programs, including the recurring role of crewman Cort Ryker on the syndicated The Blue Angels (1960–1961).

Later that year he played murder victim and title character George Hartley Beaumont in the Perry Mason episode "The Case of the Corresponding Corpse".

[14] His other television appearances included Burns and Allen, The Twilight Zone, The Dick Van Dyke Show, The Andy Griffith Show, Adventures of Superman, The Lone Ranger, Pony Express, The Rifleman, Rawhide, Gunsmoke (title character Lee Groat in S5E17’s “Groat’s Grudge” - 1957), Lassie, Leave It to Beaver, Combat!, Hazel, The Time Tunnel, Voyage to the Bottom of the Sea, Dragnet, Adam-12, Emergency!, The Six Million Dollar Man, The Bionic Woman, Wonder Woman, The Dukes of Hazzard, and Little House on the Prairie.