Gadget: Thus begins the downfall of mankind
I'm telling you, this is how iRobot and the Matrix started. Check out these little (15 inches) $5,450 5.5 lb robots called nuvos from ZMP Inc. These guys can even link up with your cell phone so you can use it's head camera to check on things. It's programmed to get down to music as well. Apparently it can walk and even understand voice commands like, "git in the kitchen and make me a sammich". Probably not that specific phrase but you get the idea. Japan only so far though. More info
here.