Via Boing Boing comes word of an open source version of Dance Dance Revolution called StepMania. While familiar with Dance Dance, I’ve neither played it nor given it much thought. But this bit over on Boing Boing caught my attention: “Two dance pads plus a USB controller are about $30 (shipping included) on eBay and they work great with Stepmania… even on my Mac.” Wow. That’s inexpensive. Certainly someone out there is modding the Quake 3 source to take advantage of something like this. Keep on the lookout.