I don't know how to post a picture in the message (copy & paste didn't work)... I saw the coolest thing the other day that is something I want to do at home. It's a Growing Wall.
The middle was made of dirt covered with shade cloth. Covering that was chicken wire then hog panels. They cut holes into the shade cloth where they wanted to put plants - and it turned out lovely. I've taken pictures of it and it's on my webpage at http://www.suburbanfarmgirl.net/july-19-2010.html.
Where I saw this was a little place called "A Knot In Thyme~Holly Farm and Lavender Gardens" and you can see it on their website at http://stores.homestead.com/AKnotInThyme/-strse-template/about/Page.bok. My page has a lot of pictures and a video of it too.
I'd be interested to know if anyone has done anything like this before and how it turned out for you. Also if anyone can think of ideas for this - what to grow, how to construct it, etc.