Earlier in the year I recorded some video to promote my LEGO NXT books and then promptly did nothing with them. Finally I have gotten around to editing them together. In particular there are videos showing Ballbot and Segway performance:
Ballbot Youtube Video shows how to use several different balls for the ballbot.
Segway Youtube Video demonstrates an autonomous Segway robot, remote controlling the Segway using a keyboard, and driving over a book to test stability.
Enjoy! There is still more unedited footage of other projects in the books, so hopefully those will be coming together soon.