Acted for Theatre West Virginia's 'Honey in the Rock' in 1961.
Had turned down the role of Gary Ewing on "Knots Landing" (1979).
Quentin Collins, his Dark Shadows character, had his own theme song, "Quentin's Theme (Shadows of the Night)." Selby provided a spoken recitation of the lyrics on the original Dark Shadows soundtrack album. In the 1980s, he sang the lyrics during an appearance on Joan Rivers' late night talk show. On Dark Shadows, the instrumental version was played repeatedly on Quentin Collins' gramophone. The song is often played to introduce David Selby during television and radio interviews and during public appearances.
Best known by the public for his role as Richard Channing on "Falcon Crest" (1981).
He is an honorary member of the West Virginia University Creative Arts Center's Advisory Board, has worked with the Governor's Honor Academy, and has made many guest appearances around the state of West Virginia. In 1989, he was honored as a distinguished alumnus of West Virginia University, and, in May 1992, he received the Distinguished Alumnus Award from the College of Communications and Fine Arts at Southern Illinois University. He was given the first Life Achievement Award from the West Virginia University College of Creative Arts in 1998, and he received an honorary doctorate from West Virginia University in 2004.
Long married (over forty years) to wife Chip, who is also a native West Virginian, they have two daughters and a son, Jamison Selby, who is also an actor. He directed David's play "Final Assault" in Charleston, West Virginia in 2003. David and Chip ran a summer children's musical theatre in New York for ten years before moving to Los Angeles.
He is among the 2007 inductees into the West Virginia Broadcasting Hall of Fame, located in the Museum of Radio and Technology in Huntington, West Virginia.