Rommelrubot is a project mainly written in ..., it's free.
remote control robot via Bluetooth
pinguino/ contains the code to be loaded on the Pinguino. See http://www.hackinglab.org/ for more information on pinguino.
ruby/ contains the Ruby script that connects to the Pinguino.
android/ contains code for Android phones that can connect to the pinguino device. An interface with buttons allows you to steer the robot.