Over the last ten years, the study and exploitation of chirality in liquid crystal systems has been one of the fastest, and largest, growth areas in the research of self-organising fluids, leading to technological applications in the area of display devices. In particular ferroelectric liquid crystals have been shown to be capable of being used as fast-switching light-valves. Such devices could form the basis of the next generation of flat panel liquid crystal displays, projection devices, and 3D imaging systems.