Check out this fascinating piece from artist Jim Jenkins titled A World Around. The piece is a motorized rolling ball sculpture with illuminated text elements. Jenkins uses an Arduino microcontroller to orchestrate various actions (i.e. the motors and lights) through a two minute cycle.
From the video description:
A track is mounted on a motorized base. As the base moves it causes a small globe to make irregular orbits around a yellow house. Intermittently illuminating on the interior walls of the house are the words "YOU, ME, US THEM."
See more kinetic sculpture by Jim Jenkins on his web site.