In short, the roomba project is a success! I can remotely drive the robot around with a computer on the same network. I can even pan/tilt the phone (being used as the camera and internet connection). A much better video and a project page will follow, when I have time.
Currently in the works… A remote control Roomba, with a pan/tilt camera mount and possibly a simple arm to hit handicapped buttons (to enter doors). Project goal: Use websocket protocol to communicate between a computer and Arduino microcontroller, using an Android phone as the USB/WiFi link.