We built a 180º field of view spherical multi-person interactive display, called the “crystal ball”. Its design allows a small group of people in the same place or in equivalently equipped ones to jointly interact on the same surface. Like a real crystal ball, it has no facets and therefore no inherent “slots” or positions for those engaged in the interaction; it can accommodate from one to four in the “séance” that occurs around it. Our example is the selection of narrative visual media for common viewing. The typical control system assumes a single user, which is why so many husbands and wives shoot each other fighting for a TV remote control, for example. In our system, each person in attendance has a private area near the equator of the globe and a common area comprising the region roughly above the attitude of the Arctic Circle. In our example, the private area is populated with movies and TV shows. Dragging an image from the private viewing area to the area of the North Pole makes it available for others.