From Ruud Burger:
CouchPotato is an automatic NZB and torrent downloader. You can keep a "want to watch"-list and it will search for NZBs/torrents of these items every X hours. Once a correct release is found, matching the correct quality, it will send it to SABnzbd or download the. nzb or. torrent to a specified directory. Automatic downloading and sending of NZBs to SABnzbd. Automatic downloading of torrents files to a specified directory. Easily add movies via IMDB UserScript. Movie sorting and renaming. Quality options to download best available. Overwrite if better is found.