*$N$ Is a Number: A Portrait of Paul Erdős*. ([Official site][1]; [Wikipedia link][2])
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;![Cover][3]


  [1]: http://zalafilms.com/films/nisanumber.html
  [2]: http://en.wikipedia.org/wiki/N_Is_a_Number%3A_A_Portrait_of_Paul_Erd%C5%91s
  [3]: http://cs.smith.edu/~orourke/MathOverflow/nistitle.jpg