The Free Software Foundation has funded a documentary about the folly of software patents, titled Patent Absurdity: how software patents broke the system. The film is available in Ogg Theora format. If you have a modern browser (Firefox, Chrome, etc) it will play embedded in your browser thanks to HTML 5′s video tag. If you are stuck with IE, you can just download VLC to watch it. The film is also available for download and as a torrent.
It is just under 29 minutes long, and highly recommended.
As a personal note – it’s awesome to see the FSF bring together two of its campaigns, End Software Patents and PlayOgg, while staying true to its founding principles: the film was produced entirely with free software.