Hexapodal robot with superb terrain capabilities using simple construction.

• University of Pennsylvania - http://kodlab.seas.upenn.edu/RHex/Home
• Boston Dynamics - http://www.bostondynamics.com/robot_rhex.html
• Overview of capabilities - http://www.cim.mcgill.ca/~neville/RHex/main.htm
• Wikipedia - http://en.wikipedia.org/wiki/Rhex
• Video - http://www.youtube.com/watch?v=wIuRVr8z_WE
• Principle - http://ijr.sagepub.com/content/20/7/616 (describing one of early models)