Still interesting with something named portable, you may see this portable mobile projector from BenQ called GP1. Its designed in a small box but able to display movie, picture and very good for presentation only by plug in the USB thumb drive. BenQ GP1 mobile projector could deliver a high resolution image just in a second without attach it with your notebook or PC. It able to work alone. You can have this portable DLP projector around March 2009 at price $599.