If you download a lot of TV shows (legally of course) then you know the pain it is to maintain them organized. iWatchTV is a good application for keeping your TV shows well sorted.
Fitted with a simple iTunes-like interface, iWatchTV makes it easy to find all your TV shows. They're all listed on the left side of the interface, and clicking on one of them will bring up the list of episodes in the center part of the program.
iWatchTV is fitted with plugins to help you recover information on shows, such as the cover or future titles. While this is a good idea, it is fairly unstable and you need to make sure that the source url you enter will work properly.
If you get all your new TV episodes from iTunes, they'll all be well categorized in the player. However if you're downloading them from another source, iWatchTV gives you an interface by which to browse through them. It may not be the most elaborate but it's definitely much better than by just using the Finder.
Despite some glitches in the plugins, iWatchTV is a handy tool to organize your downloaded TV shows by episode.