You never know where Billy Crudup will turn up: in a Broadway thriller (The Pillowman) or historical drama (his Tony-winning turn in The Coast of Utopia); in a super-hero movie (Watchmen) or romantic comedy (the forthcoming Eat, Pray, Love). Off-Broadway audiences will soon see the versatile star playing the author of a banned young-adult novel in Adam Rapp’s explosive new drama The Metal Children at the Vineyard Theatre. Crudup and the rest of the nine-person cast took a break from rehearsing this timely tale to pose for photos at the theater on April 6. Take a look.