J. Robert Oppenheimer
Julius Robert Oppenheimer was an American theoretical physicist and professor of physics at the University of California, Berkeley. As the wartime head of the Los Alamos Laboratory, Oppenheimer is among those who are called the "father of the atomic bomb" for their role in the Manhattan Project, the World War II project that developed the first nuclear weapons used in the atomic bombings of Hiroshima and Nagasaki. Wikipedia*
On the C-SPAN Networks:
J. Robert Oppenheimer has one video in the C-SPAN Video Library; the first appearance was a 1945 Speech.