Here is another awesome hexapod robot for robot programmers and enthusiasts: the PhantomX AX Metal Hexapod Mark III is based on an open source platform. It features AX series DYNAMIXEL robot servos, the ArbotiX-M Robocontroller, and rugged full metal construction.
The MKIII has 3 degree-of-freedom legs and 6 different walking gaits. It is powered by a 4500mAh LiPo battery. You can get yours here.