The Chicago Blackhawks produced a great pre-game show as part of the Stanley Cup banner raising on opening night last week.
The full-ice video projection was produced by Dangers Inc. out of Montreal, who worked with the Blackhawks in-house team to put together the moving video and graphics. Every member of the audience is wearing a remote-operated LED wristband called a Xyloband. Coldplay used these on their most recent tour. As you can see in the video they were able to program each section to flash little pins of light.
Nice job AJ & crew in Chicago to create a high-impact show and make the audience the "stars".