The guys over at Willow Garage have already proved their PR2 to be a worthy weekend companion, teaching it to play billiards, fetch beer, and even to clean up after a party. A team of UC Berkeley researchers more interested in domestic applications for robotics has also shown that PR2 can be a handy household companion during the slower parts of the week, namely laundry day. Now, they've shown that if you give PR2 a sock it can employ its keen ability for repetitive hand motions to that other regularly recurring chore: pairing socks! (wait, what did you think we were talking about?).