http://www.sciencedaily.com/releases/2013/03/130319160046.htm
Meet Zoe: a digital talking head which can express human emotions on demand with “unprecedented realism” and could herald a new era of human-computer interaction.
A virtual “talking head” which can express a full range of human emotions and could be used as a digital personal assistant, or to replace texting with “face messaging,” has been developed by researchers.
The lifelike face can display emotions such as happiness, anger, and fear, and changes its voice to suit any feeling the user wants it to simulate. Users can type in any message, specifying the requisite emotion as well, and the face recites the text. According to its designers, it is the most expressive controllable avatar ever created, replicating human emotions with unprecedented realism.