It seems that advances in robotics are being announced every day. The optical navigation system demonstrated in this video shows how the small robots aboard the ISS, SPHERES, may soon be able to navigate autonomously in zero gravity. The three SPHERES robots have been in experimental operation aboard the ISS since 2006.
There is significant long term benefits from repair to assisting humans with their jobs in space. We have all seen similar roving robotic eyes in Science Fiction video. This is a step in moving fiction to fact for future space missions.