I definitely want to build a 6 legged Rhex robot. Below are some drafts I made today with Sketchup. 6 standard servos HS-325, a LiPo battery, two Sharp IR distance sensors and a tilt switch.
An idea I had today how a rocket could be transformed into a planetary rover:
Rocket soars into the sky
Rocket engine drops at burn-out
Parachute deploys at peak altitude