Documentary

http://en.wikipedia.org/wiki/Documentary_film

Attached is a link to a wikipedia page that is about documentaries and the history of them. It is very interesting because it shows that there a forms of documentaries that have an active invovlment from the director and then there are some which are about how the documentary is just an observation of something and it can be relatively basic like someone getting on a train or someone leaving work.  There is also a part of the page that talks about the French influence of documentaires.