Automatic Metadata Lookup
Media Center can look up metadata for media files from a few online media metadata repositories such as: TMDB, Rotten Tomatoes, theTVDB, and Wikipedia. You can enable this to happen automatically through the Auto-Import system. You can also initiate this manually for files at any time by selecting the file(s), right-click > Get Movie & TV Info.
See also: Get Movie and TV Info Interact Thread