"Oppenheimer" actor Robert Downey Jr. and "The Holdovers" star Da'Vine Joy Randolph claimed their first Academy Awards on Sunday as Hollywood celebrated the best performances on film. Downey, who was nominated for an Oscar in 1993 before his career was derailed by drug use, was named best supporting actor for his role as the professional nemesis of physicist J. Robert Oppenheimer. "I'd like to thank my terrible childhood and the Academy, in that order," Downey joked before he saluted his wife Susan, who he said found him as a "snarly rescue pet" and "loved him back to life." Randolph won...