http://xeroshoes.com/
Although these are talked about a lot on the trail runner and ultralight forums, I haven't seen much on WhiteBlaze.
I bought a pair to replace my crocks for beat around and possible camp shoes, but find I use them a lot more than I thought, even in winter.
I switch back and forth on the trail right now, but I'm may eventually go 100%.
If you wear sandles or barefoot style shoes, or are just curious, check them out.
Cheap, durable and light. Great for fixing foot problems.