Check out these two new autonomous vacuum cleaners from Samsung.  The VC-RS60 and VC-RS60H are robotic vacuum cleaners that automatically recharge themselves once the remaining battery capacity drops below 20%.  An even cooler feature that these two robots sport however is the ability for to receive a call from you when your out (if your going to get lucky that night) and start vacuuming the place.  Via Akihabara