Wall displays almost universally assume a mostly flat an static shape. We ask two questions: Would people choose flat display for a given interaction scenario and, if not, wha are the display shapes they actually prefer? We conducted design study around these two questions. Our results show that participants designed different screen shapes tha varied based upon peoples' distance from the display an the content shown. Shapes ranged primarily between flat separated, concave, L-shape and convex displays. Based o our findings, we designed a dynamic display that changes t these and other configurations. Shape-shifting is controlle either by explicit interaction (where the display responds t hand gestures) or implicitly (where the display infers shape based both on its content and the sensed positions o the people around it). Overall, we contribute: a study tha motivates research on shape-shifting wall displays, and shape-shifting display system that responds to explicit an implicit controls to match particular activities.