Just a follow-up note to my post about Gleaning:
If you live or work near the Birmingham, AL area, here's a great farm co-op to check out!
This is an example of a community garden that it tended by volunteers and used to feed the hungry. I'm a huge fan of these because they teach stewardship of the land, the cycle of life in planting, and can really bring a community together.
In Seattle, these tend to happen on a smaller scale (by neighborhood, usually), around churches and school, and they're called P-Patches.
(Picardo Farm, Seattle's original community garden)
Because these are owned and run by non-profits, 100% of the crop can be donated to a food bank or soup kitchen, for immediate use. That's a huge bonus for families whose source of food may primarily be canned and processed goods, found at shelters.
Thanks to everyone who has a hand in helping make these a success, and I highly recommend that you check out your local one!