SpaceX hopes to bring real economy back into their rockets, returning the sections back to Earth for a soft landing on the ground via landing legs. The idea is to reuse each section of the rocket for much greater economy. In this short video, we see two burns of the main engines. The first brings the rocket stage out of orbit and the second "lands" the rocket on its landing legs at very low velocity in the ocean. This second test of concept was deemed a success even though the stage lost integrity as it toppled over sideways into the waves.
With luck there will be a test over land in the near future. If this works, spaceflight takes a big step forward in economy. Here's hoping. Good luck to the whole SpaceX gang.