I happened upon onebigtorrent.org a few minutes ago, and was amazed at the number of progressive audio/video downloads that were available. A whole Chomsky section, too.
Their "About" section says:
OneBigTorrent.org is a new place for sharing material that deals with or is relevant to issues of social justice, progressive and radical politics, independent media, ecology. We run a local bittorrent tracker (which we encourage uploaders to use), and we also host torrents from other trackers, as well as ed2K and Magnet links.
There cannot be a formal definition of what content we deem appropriate for upload. If the concepts above don't suit you, browse the index -- you'll get the idea quickly. We typically remove obscure stuff dealing with UFOs, mind-control, secret societies, Black Helicopters and what have you. The net is full of this bs anyway.
You can get in touch with us at webmaster [at] onebigtorrent dot org