Here is another great piece by Amorphic Robot Works. The website has a lot more information on the build and a cool video.
Skeletal Reflections is an autonomous, humanoid robot that engages its audience by enacting art historical interpretations of the viewer’s physical stance. In exhibition, human participation determines the machine’s responsive postures. The viewers’ bodily gestures are digitized and analyzed with motion capture technology. These poses are then used to summon similar classical poses from art history that Skeletal Reflections subsequently displays. The skeletal model is capable of not only holding different positions, but also of communicating a survey of historically significant poses.