Immediately I said, I seen those before! But are they comfortable? He said it is, I think they are not. He has been going for runs in it and his ankles and knees don't hurt anymore he says.

We ended up talking about benefits of simulating bare foot walking and fully padded shoes. I like padded shoes. We can't conclude which is better though.
If you are wondering what the above are called, they are Vibram Five Fingers. We wondered why not Five Toes?
I got FitFlops for my birthday and I think they feel better. Any FitFlips fans out there? Or Vibram Five Fingers fans?