Who do call when you need someone to be a crusty codger?  In looks and voice, Gammon had the genre sewed up: in films since 1966, his was a pervasive presence on the tube (guest spots galore, but remember him as Zack Rosswell on The Waltons?) and the big screen (Cool Hand Luke, Silverado, Urban Cowboy, Ironwood).  But he wasn’t a stranger to the stage, especially in the plays of Sam Shepard–his 1996 Broadway debut, in a revival of Shepard’s Buried Child, won him Tony and Drama Desk nominations. Inimitable–RIP.