A demo team from Flower Mound, Texas, performed this routine at the Taekwondo America National Tournament in January. Impressive choreography! I came across the video a few days ago, courtesy of my Taekwondo school's Facebook page.
A few of us at our school have been talking about possibly starting a demo team. The group would eventually participate in the team portion of the national tournaments, in addition to each member competing individually in their division.
Be sure to watch the finale. Amazing stuff.