This document discusses six genres of documentary film: expositional, observational, participatory, reflexive, poetic, and performative. It provides examples like John Grierson's creation of the expositional mode and Nick Broomfield's work in the reflexive mode. A brief history of documentaries is also given, noting the early work of the Lumiere brothers, Grierson coining the term "documentary", the propaganda film "Triumph of the Will", the direct cinema movement, cinema verite style, and the later concept of mockumentaries. Finally, it mentions Steven Barnett's theory of the "Disneyfication" of documentaries to prioritize ratings over factual seriousness.