Short Documentary on Motherboard/Vice:



Life Inside a Secret Chinese Bitcoin Mine (Feb 2014; length: 10min)

"In October of last year Motherboard gained access to a massive, secretive Bitcoin mine housed within a repurposed factory in the Liaoning Province in rural northeast China."


edit:

Trailer released for Alex Winter's "Deep Web" Documentary:
http://www.deepwebthemovie.com/#trailer