Movie showing the motion of a monolayer of microrollers viewed from above, driven by a constant torque and confined to lie in a plane just above a bottom wall.  Each panel shows the suspension at different packing density, color coded according to figure 5 in the main text. Each panel is zoomed in from the actual size of the suspension to visually highlight the motion of individual particles, some of which have been highlighted in pink. Black cubes have been drawn on the particles to provide a visual reference for their orientation.