It’s been 25 years since “Goodfellas” changed forever the rules of gangster movies. Bestselling author and producer Nicholas Pileggi, who co-wrote the screenplay with Martin Scorsese, is joined by Irwin Winkler, the Academy Award-winning producer (“Rocky,” “Raging Bull,” and “The Right Stuff,” as well as “Goodfellas”), and Dechert law firm attorney Edward McDonald, who recreated his real-life role as the prosecutor in the film, to look back and celebrate. T. J. English, one of the nation’s top crime writers, moderates. 92nd Street Y, 1395 Lexington Ave., Buttenwieser Hall. May 24, 8:15 p.m. Tickets are $32-$36, $15 for those 35 and younger at 92y.org.