More info about this from Engadget:

People have come up with numerous ways to control their Roombas — USB, Bluetooth, MacBook tilt sensors, and even a MIDI keyboard — and now that the Wiimote has been hacked to operate several non-Wii devices — computers, home automation systems, and even an RC truck — it’s no surprise that some clever modder would make these two great tastes taste great together. And sure enough, a gentleman named Chris Hughes has just completed a script that merges Tod Kurt’s Roomba control software with the recently released DarwinRemote, resulting in a little slavebot that scoots around using just a flick of your wrist.