If you've ever sat and wondered what it would be like to look into the eye of a fly, I'm fairly sure that this visual display would come pretty close. It's called Aleph and has been built by two rather clever bods based in Sweden. It's made up of a large collection of motorised mirrors that angle individually, based on whatever is in front of the array. The really snazzy thing is that the movement and visual recognition is automatic. I think the video explains the concept far better than i can.
There's something extremely relaxing about watching the dance of the mirrors, and as the website suggests, this display on a really large scale would be very cool indeed.