When you identify an object's shape, a particular part of your brain called the LOtv "lights up". At first this area was thought to be purely visual, but several years ago Amir Amedi, now at Harvard Medical School, showed that touch could also activate it. Now Amedi and his team have shown that even "hearing" a shape can activate the area.
The research group built a device that measures a subject's ability to mentally model space using sound, and found that they could in fact improve a persons results. This explains the conventional wisdom that blind people have a heightened sense of hearing. I don't think there are any would-be Daredevils out there, but it's still pretty cool.