Although you won't hear this through official channels, Barnes and Noble's Nook has been plenty of fun for hacksters
. And what spells fun better than U-b-u-n-t-u? Certainly nothing that we can mention in mixed company, that's for sure! If you pop over to the always lively XDA Developers Forum, you'll see a crazy little post wherein the author took inspiration from a Nexus One hack and decided to port Ubuntu to the Nook Color. And by jove, it looks like it's worked... even if it is by accounts "a little laggy" and not without errors. Please feel free to hit the source link if you'd like to take in the details on what made this work... and to keep abreast of further developments, to boot.