In addition, I like the following documentaries:
- "Client 9: The Rise and Fall of Eliot Spitzer" http://www.imdb.com/title/tt1638362/
- "Planet Earth" IMHO one of BBC's best productions with some of the most amazing nature shots ever (e.g., a [presumably stratospheric] shot that looks like fog or fire but is really a swarm of flies) http://www.imdb.com/title/tt0795176/
- BBC has also two of the best documentary series regarding the second world war: "The World at War" (http://www.imdb.com/title/tt0071075/) and "The Nazis: A Warning from History" (http://www.imdb.com/title/tt0207907/)
- Errol Morris' "The Thin Blue Line" (http://www.imdb.com/title/tt0096257/) and "The Fog of War" (http://www.imdb.com/title/tt0317910/)