KiNG and the kinemage interactive three-dimensional graphics it displays are a powerful yet easy to use system for viewing and analysing structures of macromolecules. Kinemages can be used in a variety of ways, from interactive molecular illustrations for teaching or the web, to display of high-dimensional data or detailed structural analysis for research. KiNG also provides a set of crystallographic rebuilding tools, including a novel `backrub' tool for making local, non-disruptive adjustments to protein backbone that couple strongly to side-chain changes, supported by display of electron density, rotamer quality and all-atom contact analysis. KiNG includes a suite of tools for conveniently constructing kinemages from a variety of sources, as well as an extensive set of on-screen editing and drawing functions.