When it comes to robots in our home, there are a few well-worn tropes to which we've grown accustomed. There's the friendly Rosie the Robot butler that brings us our futuristic food and slippers. Then there's the fatalistic, sci-fi view in which any humanoid robot is just a step towards a Terminator- or Matrix-style dystopia in which humans are reduced to a nuisance or a power supply, respectively. At this year's Consumer Electronics Show, however, there was an assortment of robots designed to monitor a person's health and intervene if something goes wrong. And those helpful little bots may be the last thing you see before the squishy, inefficient, meat-based machine we call a body gives up the ghost.