Would have been more entertaining if the "Oppenheimer" movie had been made about Frank Oppenheimer [1] -- a younger brother of J. Robert and the founder of the Exploratorium museum in San Francisco [2], where Pi Day comes from [3]

[1] https://en.wikipedia.org/wiki/Frank_Oppenheimer

[2] https://en.wikipedia.org/wiki/Exploratorium

[3] https://en.wikipedia.org/wiki/Pi_Day