Done The Impossible goes BitTorrent download.
And a legal torrent at that - "..because modern copyrights are so restrictive, nobody dares do anything that *might* infringe on somebody's oh so holy copyright. Thus, we have chosen to not go down that road with our documentary. Enjoy it, share it, re-mix it all you like!". Torrent - here. Buy the DVD with extras, etc - here.