From Participatory Culture:
Miro for Linux is a HD video player and torrent downloader. It can play almost any video file and offers over 6,000 free internet TV shows and video podcasts. You can subscribe to channels of Internet video, download videos, and watch them full screen, one after the other, all in one application. Miro has a simple interface designed for full screen HD video. Since Miro downloads most videos, you can take your shows with you, even on an airplane. Miro is completely free and open source, developed by a non-profit organization and volunteers around the world.