Here's an example of a documentary that is way, way, way too broad in scope: Hustwit basically tries to encapsulate countless modern developments in urban living and architecture throughout the entire world in one eighty minute film. It simply can't be done effectively. A few precious sound bites by noted architects such as Norman Foster and Rem Koolhaas simply don't cut it; it touches on ideas such as sustainable living and preserving the environment before rapidly moving on to some other big concept. As a Cliff's Notes view of "urbanization" it has some value, but you'll have to do the rest of the research on your own.
Director: Gary Hustwit
Year Released: 2011