Listening to Hollywood legends reflect on their careers is a treat that provides a perspective wholly other from what we, the audience, have come to know. Today, in anticipation of The Irishman’s Netflix debut, GQ has posted a conversation with Al Pacino, where the star discusses what many consider his four most indelible roles. The 79-year-old actor talks Serpico, Dog Day Afternoon, Scarface, and The Godfather (with a nod to his excellent early turn in The Panic in Needle Park, which won him the Michael Corleone part). He reminisces about growing up with a difficult mother and …