Capturing Reality: The Art of Documentary Reviews
The real value in this documentary is that it emphasizes the differing theories on just exactly what a documentary should be. There is no one right way to produce and film a documentary. Some directors like to film their interviewees when least expected to capture as much of the interviewees real character as possible, while others (like acclaimed director Werner Herzog, and one of my personal favorites) prefer to embellish the truth slightly to better establish a literary theme in the documentary.
Also, beside the sheer ideas this picture provides for student filmmakers, there are also clips from a wide variety of acclaimed documentaries for those looking for good ideas on what documentaries to watch.
Capturing Reality: The art of Documentary is a great source for those who want to better understand what non-fiction filmmaking is.