Glx-Dock/Cairo-Dock is an interactive dock (like the one you know from a Mac) that provides easy access to some of the files, folders, and applications on your computer, and more. You can use it with OpenGL (to use your graphics card) or without, and it is compatible with Compiz, but it can also run without a composite manager. It works under Unity, GNOME, KDE, and Xfce. This tutorial shows how to install and use Glx-Dock/Cairo-Dock on an Ubuntu 12.04 desktop (with Unity).