The Cloud: MIT Mobile Experience Lab
Consisting of 15,371 individual fibers and 65km of fiber optics, The Cloud senses human movement and tactile engagement provoking a variety of responses, including changes in light, animation and sound. We don't have anyone on the ground yet to go check it out in person but it seems to be a hypnotic and engaging experience. Check out the video to get a better sense of its functionality.
The software used to create The Cloud is open source, so if you have what it takes feel free to add to the sculpture. More information can be found at The Cloud.