Buck Henry, the impish screenwriter whose wry, satirical sensibility brought comic electricity to The Graduate, What’s Up, Doc?, To Die For and TV’s Get Smart, has died. He was 89.Henry, a two-time Oscar nominee who often appeared onscreen — perhaps most memorably as a 10-time host (all in the show’s first four years) on Saturday Night Live — died of a heart attack Wednesday at a Los Angeles hospital, his wife, Irene, told The Washington Post.