I recently came across this and liked it. Its about lies....lies about religion, 911 and the world power structure. The first 15 minutes is boring as shit but once you get past that it becomes more interesting, at least for a documentary. Its a 2 hour movie that is free to watch or download.

http://www.zeitgeistmovie.com/main.htm

If you have a torrent client then you download the move from this page:

http://www.zeitgeistmovie.com/dloads.htm