List of interesting math videos / documentaries This is an offshoot of the question on Fun math outreach/social activities. I have listed a few videos/documentaries I have seen. I would appreciate if people could add on to this list.
$1.$ Story of maths Part1 Part2 Part3 Part4
$2.$ Dangerous Knowledge Part1 Part2
$3.$ Fermat's Last Theorem
$4.$ The Importance of Mathematics
$5.$ To Infinity and Beyond

A few years back the NHK made a documentary called "The Spell of Poincare Conjecture".  (You can find a possibly non permanent link here to part 1 of 4 [with also links to the rest of the video].)
