NEW: Get Airdate and Network
A Correspondent inquired whether the original airdate info for a TV Show track could somehow be obtained from the internet. While the IMDB offers this info, you can't really get at it so good with AppleScript, so I went with the--presumably--next best thing, which is IGN.com. Get Airdate and Network will use the show and episode names of a single selected TV Show track in iTunes to search the IGN.com website for that episode's page and then parse that page for the original airdate and network. You can then either open IGN.com's page for the episode or add the info to the selected TV Show's comment field. Note that results using this version are not one-hundred percent fruitful.