Benedict was found dead Monday on Martha's Vineyard and his brother, Charles, said authorities were still investigating the cause of death.
Benedict began his acting career in the 1960s in the Theatre Company of Boston, alongside such future stars as Robert De Niro, Dustin Hoffman and Al Pacino.
Benedict went on to appear in a number of movies, including a role as the oddball director in "The Goodbye Girl" with Richard Dreyfuss. But he was mainly known for his role as Bentley in "The Jeffersons," which ran on CBS from 1975 to '85.
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