This is the one Ciro Santilli envies the most, because he has such a great overlap with Ciro's interests, e.g.:
John von Neuman - a documentary by the Mathematical Association of America (1966)
Source. Some good testimonies. Some boring. Articles by others on the same topic
John von Neumann was a Hungarian-American mathematician, physicist, and computer scientist who made significant contributions to a wide range of fields, including mathematics, physics, economics, statistics, and computer science. Born on December 28, 1903, in Budapest, Hungary, he was known for his brilliant intellect and was considered one of the foremost mathematicians of the 20th century.