From Wikepedia: Collins probably is best known for his role as the Reverend Eric Camden in more than two hundred episodes of the television series 7th Heaven, though he also notably portrayed Captain Willard Decker in Star Trek: The Motion Picture. Rev. Camden's wife, Annie, is played by fellow Star Trek alum Catherine Hicks (who played Dr. Gillian Taylor in Star Trek IV: The Voyage Home).
Additional television credits include starring roles in Tales of the Gold Monkey and Tattingers, as well as guest appearances in The Waltons, Barnaby Jones, Charlie's Angels, and numerousmini-series and made-for-television movies.
He was nominated for an Emmy for his work opposite Ann-Margret in the minseries The Two Mrs. Grenvilles and he played John F. Kennedy in the miniseries A Woman Named Jackie, which won the Emmy for Best Miniseries.
Collins and his 7th Heaven co-star Beverley Mitchell are the only two original cast members to appear in every single episode.
Collins is the author of two novels: Eye Contact (1994) and Double Exposure (1998).
Collins is the great-great-grandson of General James Baird Weaver, the 1880 Greenback Party presidential candidate and the 1892 Populist Party ("People's Party") candidate for president.
Collins has co-starred with Diane Keaton in two movies; The First Wives Club (1996) and Because I Said So (2007).
Collins is married to actress Faye Grant.