ted, Torrent Episode Downloader can find episodes of any TV show you like to watch.

It uses RSS and Bittorrent technology to get you the newest episodes as fast is possible. ted is free, easy to use and works on almost all computers. Ted checks feeds from TorrentReactor, Mininova, TVRSS, The PirateBay, Mr. Twig and Isohunt for new episodes of tv shows
Once ted found a new episode, it will announce this to you. Then ted will fire up your favourite bittorrent client and your client will start downloading the episode. How cool and easy is that?

Other than that, ted also has a schedule checking feature. If you know that the latest episode of Heroes is being aired every Monday, you wouldn’t want to waste your bandwidth by letting it check for new episode everyday. Just schedule ted to check for the latest episode of Heroes on Monday and Tuesday.
Ted works on Windows, Linux and Mac systems that have Java Runtime Environment 5.0 installed. You will also need a bittorrent client, like Azureus, µTorrent or Bitcomet to actually download the episodes.
Note: Watch out for the new version of ted 0.9 which to be released in the coming week! It will have new features and lots of improvements. In the meantime, you can go ahead and use the version 0.8 and then upgrade to 0.9 when it’s out.
[ Download ted 0.8 ]