Interview with Donna Douglas"The Beverly Hillbillies" star Donna Douglas died, her daughter-in-law confirmed to ABC News today.She was 81.Douglas, a native of Baton Rouge, Louisiana, had roles in TV shows including "The Twilight Zone," "The Adventures of Ozzie and Harriet" and "Route 66." But she was best known for playing Elly May Clampett for nine seasons of the CBS sitcom, which she once said had "wonderful values.""Elly...