Installing iPodLinux on the iPod Nano
Joe Barr over at Linux.com (also owned by VA Sofware) has an interesting writeup on how he took his iPod Nano and installed iPodLinux on it, making it into a "dual-booting, sweet MP3-singing, iDoom-playing monster."
I have linux installed on my nano for the past 3 months and I am still looking for a way to play compressed video on it. If it can play compressed video then I don't need iPod Video.
It could be a portable usb linux firewall!