I can't recall whether the "Zeitgeist" movies have been discussed on TPM before. I had heard of them but just viewed them for the first time and found them quite interesting. There are currently two such movies, each about 2-Hrs in length and available for free viewing via the website: www.zeitgeistmovie.com

I recommend viewing the newest of the two film first, the "Addendum", released on 10-08-2008. It addresses many of the immediate concerns - lack of trust in our institutions, green energy, the banking system, the failure of our politics, etc. -  which have very recently been blogged about here at TPM. This film describes the possibiity of creating a rather utopian (I don't mean that as a prejoritive) future for humanity. The other film, the original, deals more with what could fairly be described as conspiracy theories (again, not meant as a prejoritive), but I still found it well presented and worth watching.