When filmmaker Peter Kunhardt asked friend Peter Buffett if his dad would be open to him making a documentary out of his life, Buffett told Kunhardt to write him a letter.
Within a week, Kunhardt received a reply from famous investor Warren Buffett saying yes. The Emmy Award-winning producer made "Becoming Warren Buffett" between 2014 and 2016, after five visits to Omaha, where Buffett resides.
"Like everybody, I wondered how this experience would help me personally with my finances. What lesson am I going to learn that's going to make me rich like Warren?" Kunhardt told CNBC. "There is no answer to that. Warren is as successful as he is because of a combination of his unique brain and the principals that his father and family instilled in him."