Nook Color hacked to run Ubuntu
First off, you'll obviously need to have rooted your Nook Color. The Ubuntu install boots off of the SD card, and as such won't replace the Android OS the Nook Color ships with. To run Ubuntu on your Nook Color, you use an Android VNC app. It's all detailed over on this forum thread, and make sure you follow the instructions precisely if you'd like to see how everyone's favorite flavor of Linux performs on the Nook Color. Do keep in mind that the user who posted the hack does mention that it's rather slow at the moment -- so don't expect stellar performance just yet. It'll be interesting to see what kind of improvements can be made in future releases.