Has anyone tried any of the "pico projectors" out there as an alternative to large flat-panels for watching movies in cramped quarters? I've seen these things on a bunch of tech blogs and they seem like a good way to share videos and photos, but there are so many out there and I can't really tell which one would work best for projecting movies in my dorm room at night. I don't need anything fancy, just something small that I can carry easily in my school bag that's battery powered and can project a 40-60" image on a wall or ceiling. An built-in speaker would be great so that I don't have to use headphones all the time. I'll be connecting it to either my iPod or PSP. Anybody here have first hand experience with these things?