Romantically involved with actress/singer/composer Lynne Marta throughout the run of "Starsky and Hutch" (1975) but they split up after the show ended.
Between 1984 and 1986, David financed, produced and directed an award-winning documentary, The Fighting Ministers, which uses the shut-down of the steel industry in Pittsburgh, Pennsylvania as its basis.
Between 1977 and 1982, he recorded four albums, which included a string of major hit singles: Don`t Give Up On Us, Baby; Silver Lady; and Going In with my Eyes Open. He toured extensively with his band in the USA, UK, Japan and South America.
His brother, the Rev. Solberg, was an activist minister (Lutheran). He has joined him on more than one occasion in public protest or rally. Also, he and Paul Michael Glaser have attended Christian/Jewish benefits together at least once.
Used to appear on "The Merv Griffin Show" (1962) wearing a hood and was billed as "The Covered Man" before becoming nationally known on "Starsky and Hutch" (1975).