HAL9000 is a screenlet that will show you how busy your processor is and it will occasionally speak (unless you disable that).
Brighter glowing eye means HAL, your computer, is less busy.
Screenlets is the name of both a set of independently-developed widget applications and the widget engine which runs them. The engine runs primarily on X11-based compositing window managers, most notably the Compiz (under Linux) architecture.
What's New in This Release:
· New version with more sounds and shutdown sounds... thanks to Allan Bogh!