From NY Times: Warren Stevens was a lanky, square-jawed actor whose face became familiar through his more than 100 roles on television and in movies over six decades. A stage actor in the '40s, he became a versatile and ubiquitous presence on television in the ’50s. He played three different characters on episodes of “Have Gun, Will Travel” between 1957 and 1963; three different characters on “Voyage to the Bottom of the Sea” between 1965 and 1967; four characters on “Bonanza” between 1965 and 1970; and four on “Ironside” between 1967 and 1975. His other more than 60 television roles included appearances (and sometimes recurring roles) on “Return to Peyton Place,” “The Twilight Zone,” “M*A*S*H,” “Rawhide,” “The Man From U.N.C.L.E” and “Gunsmoke.” Perhaps his best-known role was in the classic 1956 science fiction movie “Forbidden Planet.” He played the ill-fated Doc Ostrow, who perishes at the hand of a mysterious force on the planet Altair IV, 16 light years from Earth, after his spaceship arrives to search for a long-lost colony. He was 92.
http://www.nytimes.com/2012/03/30/movies/warren-stevens-busy-character-actor-dies-at-92.html