Here are some documentaries that may interest you:
Search the library's full collection of streaming films and videos.
Media With Meaning. Collection of presentations discussing topics ranging from feature films to citizen journalism.
Why We Need Brave Journalists. Talks from reporters who've been arrested, shot at and threatened as they report from war zones and dangerous areas.
For more, search the site at http://www.ted.com.
Search these websites for videos and audio programs and interviews. For most, you can do a simple keyword search or browse the list of topics.