Moovida (Windows, Linux) - free open source media player.

Moovida is much more than a simple media player:

• Watch movies & TV shows: Catalog your movies, tv shows and other videos with integrated online content. Moovida supports HD and almost all file formats like divX, mkv, flv, h264, mov, ogg and much more without need for additional codecs.
• Enjoy your pictures: Visualize the photos of your latest trip either from your hard drive or your flickr account in a nicely animated slideshow.
• Manage your music: Access all of your songs easily, enhance your library with online services and find new music to listen to.
• Get connected: Flickr, Youtube, Yes.fm, SHOUTcast and much more - extend the functionality of Moovida with new content from top internet sites. Listen online to your favorite songs, share your media with your friends on your network or scan other devices like your iPod with Moovida.

Moovida doesn't support TV Tuner cards.