Zack Sharf Digital News Director “Good Time” and “Uncut Gems” director Benny Safdie expands his acting career with a prominent supporting role in Christopher Nolan’s “Oppenheimer.” He plays Edward Teller, the real-life theoretical physicist known as “the father of the hydrogen bomb.” Teller joined Oppenheimer to work on the atomic bomb in Los Alamos, N.M., focusing on nuclear implosion and uranium hydride research. He was born in Budapest, Austria-Hungary, and had a thick accent, which presented Safdie with one of his biggest acting challenges. “The accent was something I was so nervous about,” Safdie recently told Vulture.