You may not be able to build an HRP-4C fembot in your average garage, but the programming would practically take care of itself -- not only does the AIST humanoid sing using off-the-shelf Yamaha Vocaloid software, its dance moves are click-and-drag, too. Roboticist Dr. Kazuhito Yokoi gave IEEE Spectrum an inside look at the HRP-4C's motion trajectory software, which works much like 3D animation tools: you position the limbs where you want them to start and when you want them to end up usi
