It's a huge multi-user touchscreen. Nasdaq's got one as well: http://reaktor.com/work/nasdaq/ We (I work at Reaktor) use it to keep tabs on our projects and see who's doing what: http://multitouch.reaktor.com/visual-asset-management-tool

The actual screen is built by Multitaction (http://www.multitaction.com/) and Reaktor creates custom software for it.