Canonical today announced Ubuntu for Phones, a version of its open OS designed for smartphones. While no hardware has been announced, it's expected to run on rootable Android phones like the Galaxy Nexus. Canonical's plan is to eventually just have one operating system that will run with different UIs depending on what device you install it on--a gesture-centric interface for phones and tablets and a traditional mouse and keyboard interface for laptops and desktops. You can watch Ubuntu founder Mark Shuttleworth explain the OS in this video. We'll be trying it out at CES next week.