MetaX for Windows is a meta-data tagger for MP4 files and their derivatives, as
well as QuickTime movie files. The meta-data will be displayed in iTunes, Apple
Front Row and the Apple TV. It allows you to search for information on the
internet and then write that information into the file.
It can also be used in conjunction with MovieLibrary, which creates a database of
all your movies which can be searched and the search results printed with
varying levels of detail. When you tag a movie with MetaX, it can automatically
keep your MovieLibrary up to date.
If you own an Apple TV, you can use iTunesWatcher to keep your Apple TV
synchronized.