The character actor had recurring roles on the TV series "Boston Legal" and "King of the Hill," and was a regular on "Love, American Style."For Altman, Gibson had prominent roles in "Nashville" and "The Long Goodbye." He played a bumbling American Nazi leader in "The Blues Brothers."
On "Laugh-In," Gibson was known for his bad poetry, which he recited throughout his career.
He was nominated for two Golden Globe awards -- one for "Nashville" and the other for "Laugh-In" -- as well as a Grammy for the songs he wrote for "Nashville."
Gibson, who died Monday, was born in Germantown, Pennsylvania, on Sept. 21, 1935. He started as a child actor, with his break coming in Jerry Lewis' "The Nutty Professor."
Gibson is survived by three sons: Jon, a business affairs executive at Universal Pictures; James, a screenwriter, Charles, a director and visual effects supervisor; and two grandchildren.
Memorial services have not been announced. In lieu of flowers, donations may be made to the Screen Actors Guild Foundation and Friends of the Malibu Public Library.