Phobot: A NXT robot simulating emotions
Martyn already has posted about the International Conference about Human-Robot interaction, and one of the robots on display there was Phobot, a NXT robot designed by students of the Univeryity of Amsterdam to mimic emotions. The target of Phobot (that won the Human-Robot Interaction 2008 Student Design Competition) is
"meant as a concept exploring possible support tools for kids with object or location-related phobias,"as the associated web site states.
Have a look there - you will find a lot of interesting stuff, including a video.