I read a small article in the Saturday paper about the one hundred mile diet (not the weight loss type). Basically, you only eat foods grown within 100 miles of you. Lovely thought - imagine all the environmental savings of ridiculous transport miles.
It would be lovely to try this, but (yes, there's always a but) it would take some organisation, some spare cash and some time hanging out at farmer's markets. I've been thinking about it all afternoon.
It's really only an updated version of self sufficiency, I suppose, but still very tempting.
I know myself; I won't do it. It's the same reason I read memoirs about people studying wildlife in the African wilderness, rather than writing one myself.