MetaX allows you to tag your movies for a professional display in iTunes, Apple TV or Apple Front Row
You can use presets to easily tag different episodes of a TV Show without having to re-enter all the data.
Every time you tag a show the information is saved in an archive in case you need to tag again later.
You can export the data to share with your friends. You can search for Yahoo Posters to get the best cover art. MetaX will automatically get data from tagChimp and also let you share your tagged information with it.
MetaX will automatically start up your browser pointed at IMDB to get even more information.