Docalliance has a wide range of docs online (legally, unlike many portals), some to download at small cost or even free, others streamed:
From April 18 to May 2, you can watch five unique, multiply awarded documentary films by Polish director Marcel ÅoziÅ„ski for free. Enjoy the best of the past twenty years of a filmmaker who is “trying to influence the reality around him while following the outcome with openness”.