Kismet is an expressive sociable head developed by Cynthia Breazeal. I was peripherally involved with the project developing an early approach for Kismet's eye detection module. This enabled Kismet to make eye contact with people, which turned out to be a very strong social cue.
This project is no longer active.
Breazea, Cynthial, A. Edsinger, P. Fitzpatrick, B. Scassellati. "Active Vision for Sociable Robots". Socially Intelligent Agents - The Human in the Loop, Special Issue IEEE Transactions on Man, Cybernetics, and Systems, Part A: Systems and Humans. Kerstin Dautenhahn (ed.), Volume 31, number 5, pp. 443-453, September 2001.[PDF]
Breazeal, Cynthia, Aaron Edsinger, Paul Fitzpatrick, Brian Scassellati and Paulina Varchavskaia. "Social Constraints on Animate Vision". IEEE Intelligent Systems, July-August 2000.[PDF]