Barefoot Professor Explains the Benefits

 Food for thought... also read Christopher McDougal's book 
Born to Run: A Hidden Tribe, Superathletes, and the Greatest Race the World Has Never Seen

More options for shoes in "barefoot running"

http://feelmax.com/

I'm liking this shoe too! (see above link)

And a cool Barefoot blog to boot:

http://www.barefootted.com/