Best known for his role as Colonel Steve Austin in the television series The Six Million Dollar Man, and as Colt Stevens in the series The Fall Guy. He later would reprise his role of Colonel Steve Austin in several reunion television movies.
He found work at the Los Angeles Park and Recreation Department after rejecting an offer to play football professionally.
He played Heath Barkley on The Big Valley from 1965-1969.
He married actress Farrah Fawcett in 1973, his second of four marriages. He has four children.
He was originally cast in the lead of Midnight Cowboy but after pulling out, the famous role went to Jon Voight.