I am just finished with a huge project - ripping all my DVDs and store on external hard drives as MP4 files. Finally I can mark any movie in DVDpedia and hit the Play button to play it instantly. With a Mac mini connected to my TV and Front Row plugin for DVDpedia this is really fun!
To get to the point - now that storage becomes cheaper and cheaper, it is also more common to do as I do - to save all the movies on a hard drive. It would be great with a better integration with the linked files in DVDpedia, so we can see directly what type of file it is, how large it is, the exact running time of the movie etc. Some extra columns are all we need, and if people don't need these columns, they can just disable them under "View Options".