Playing movies on the PSP would be cool, but I don't know what it is (the refresh rate perhaps) that leads to distracting shadows, artifacts, and an overall unsatisfying movie watching experience. I don't have the technical name for whatever plagues the screen (and some games), but it sure is annoying. A cheap, portable DVD player fits the bill much better. If you're buying a PSP to watch movies on the go, it's a poor investment. Lumines is fun however. ;-)