We’ve been trained by Coppola and Scorsese to expect mobster movies to follow epic story arcs, so it might feel a little odd to watch one that’s more tightly wound around a small series of events. Or maybe “Billy Bathgate” (1991) isn’t all that good. It didn’t do much for the career of Loren Dean (Billy), who carries this Depression-era story headlined by Dustin Hoffman, Nicole Kidman and Bruce Willis. Kidman sleeps with all of them while being married to Xander Berkeley, a more interesting subplot than the main gangster boilerplate. Billy’s a young wannabe. Maybe this film was, too.