We've been following the evolution of the Willow Garage PR2 robot for a little over a year now, watching as it learned to mooch electricity and hustle pool sharks . That, as it turns out, was only the beginning. The robots are now up for general pre-order should anyone want one (priced well into the "if you have to ask" range, surely), and to celebrate that Willow Garage founder Scott Hassan put up $10k to sponsor a video contest of the PR2 robot doing some impressive things. The winner is a video called "Sockification" from a crew at UC Berkeley in which the PR2 shows some... enthusiastic sock sorting skills. You can see that one embedded below, along with our personal favorite: an ode to StrongBad and his lightswitch rave.