The coolest part of the program is that it also acts as a front-end to amazon.com. You can search for movies at amazon and add them to your collection. The software automatically adds information about the DVD, like the cast and any "easter eggs," to your collection. You can also use the software to sell your used DVDs in the amazon shops, or to buy new DVDs that you find via the searches.
All in all, it's a pretty nifty piece of software. You should go download it now.