And while we're on the subject of nerdiness + fiber, there was a great story on NPR's Science Friday a few weeks ago about building a nano-yarn:
You can listen to the podcast at the site, but the gist is that they're using nanotubes and nanoparticles that are functional in some way (conductive or catalytic, for example) and twisting them into fibers. The fibers could then be woven into textiles that are superconductive, energy storing, energy generating, etc. Sweet! So when is energy generating yarn going to be available in my local yarn shop?