Talk Nerdy to Me

Some very clever MIT students built a light-up disco dance floor for their dorm lounge a la Saturday Night Fever, only much cooler and a lot more complicated (smaller squares, computer controlled, multiple shades of purple...). This site explains it all, and it is all great--the video, the how-we-did-it diary, the FAQs, the geek-love feeling it gives me.

I want one for my hallway!