From the start of Morgan Neville’s long-awaited documentary "Roadrunner: A Film About Anthony Bourdain," the specter of the chef and entertainer’s 2018 death is ever present. Bourdain is shown talking to an off-camera producer about his lack of concern about his remains after he’s dead — unless it could be used for “entertainment value.” “Throw me into a wood chipper, spray me into Harrods in the middle of the rush hour,” he says. “That would be pretty epic. I wouldn’t mind being remembered in that way.” Bourdain’s obsessions, humanity, curiosity and mordant wit intermingle throughout the movi...