I was looking at this picture when I got an idea...
http://www.dcemu.co.uk/vbulletin/att...1&d=1139144015
Notice the homebrew icon at the bottom that says "JzDVDPlayer." I have no idea what the hell this is, and my buddy Google doesn't seem to have any poop on it either, but once I got to thinkink about what this could be, I got a great idea!
What if there was a PC program that could rip DVDs into compressed, encrypted proprietary disc images for direct playback on the PSP? This would give all of the advantages UMD Video had to offer (full-res video, menus, subtitles, multi-languages, special features, etc.) without your movie being trapped in your tiny PSP screen. The only downfall would be that DVD movies are huge and your mem stick would fill up way fast.