I would love it if I could choose a book to read to my grandchildren and have it appear on the screen. The ones that are there that are animated are perfect, but it would be great to read a book of my choosing. If the book comes up on the screen, instead of having to hold the book up to be seen, I believe it would be a great learning tool for a child, and it would also keep them more engaged than watching me trying to fumble around to read and show the pages at the same time. The books could be rented online or purchased. I think it would make a great selling point for Portal and as it helps families that are unable to be together or even if mom wanted "5 Minutes of Peace", so another person could entertain that child by reading to them.