The 81st Golden Globe Awards drew the biggest stars of stage and screen to the Beverly Hilton hotel Monday. The event was hosted by comedian Jo Koy, who opened the show with a zinger about Robert De Niro, 79, becoming a dad again in May. The “Killers of the Flower Moon” actor was nominated for Best Performance by a Male Actor in a Supporting Role. That award went to “Oppenheimer” actor Robert Downey Jr. “Oppenheimer” maker Christopher Nolan won Best Director for that three-hour epic about the inventors of the nuclear bomb. A short time later, “Oppenheimer” star Cillian Murphy was named Best Ma…