Dan Barber
His whole approach initially struck me as an interesting example of the sorts of things that contemporary art and culture can do to reintroduce nature to us.
The more I thought about it, however, the more I came to think that the whole reason Dan Barber is able to create such a system (and foreground nature and vegetables in the way he does) is because he has large amounts of resources (land, time, money, fame) at his disposable. It is quite ironic that he is seen as the face of sustainable cooking when his techniques are not really transferable into any sort of larger, more global systems.