Sensor fusion enables the sense of depth available in 3D modeling, which is used for all modern design and construction, as well as the magic of special effects in movies.
If a surgeon used a scalpel enhanced with Smart-Tool technology, the real-time sensor on the blade could sense what kind of tissue it is touching and rely the information back to the doctor.
What's most striking about Fujitsu's little robot is its simplicity--in a sense, it's merely a camera with a motion sensor atop a base that contains two wheels.