The Gnome-Do project is a breath of fresh air. The docker feature gives Linux a Mac like style that brings it into the user friendly desktop world. This project should be added to the Gnome Desktop project and be included into the Gnome desktop default settings.
If you are interested in giving this docker a spin just add this repository to your system>administration>software sources and add the OpenPGP key as well.
Ubuntu 8.10 repository: deb http://ppa.launchpad.net/do-core/ppa/ubuntu intrepid main
You can find the OpenPGP key here.