I made a video of my XO running Ubuntu. Nothing really unusual -- booting up, using wireless networking, running Firefox, watching Youtube video, running OpenOffice.org writer simultaneously with Firefox in 256M without swap, rotating the screen and switching backlight on and off:
Part 1 Click to view
Part 2 Click to view
As usual, all video capture, adding titles and format conversion was done on my Linux desktop. Camera is previously mentioned
Sony DCR-TRV320, titles added in
Kino video editor.