I enjoyed this --
The Man Who Saved Geometry
Harold Scott MacDonald "Donald" Coxeter
This documentary follows the life and times of geometer Donald Coxeter on his journey to the last geometry conference he would attend - to Budapest in the summer of 2002, when he was 95 years old. There Coxeter delivered the opening address, offering a new and elegant proof for a theorem about "four mutually tangent circles," a subject which finds application in data-mining technology. Coxeter is widely regarded as the man who kept geometry alive in the past half century.