Farrago, a new iOS app used a Roomba to demonstrate the video capabilities. Farrago is available now for iPhone and iPod Touch, and I hear an iPad 2 release is planned. Check out their website for more information: www.farragoapp.com.
I like that this is a kit for people to make their own augmented reality things, a tactic that allows users to put their own fingerprint on the technology. Could be an interesting tool for propagation planning one day.