I never thought there would be a day when I had a YouTube video on my site... but this is just great:
"Keepon is a small creature-like robot with a soft rubber skin, two cameras in its eyes, and a microphone in its nose. Keepon is designed to interact with children by communicating attention and emotion. It has four degrees of freedom: attention is directed by turning +/-180° and nodding +/-40°, while emotion is expressed by rocking side-to-side +/-25° and bobbing up to 15mm"
Link from JustinD.