I've mentioned before that I'm a subscriber to the COMFOOD e-mail loop, and though it's lots of mail, I keep receiving enough that's worth it.
The latest tidbit is a database of books and films on issues of interest to sustaina-foodies such as myself (and possibly you?) It is maintained by Philip H. Howard, an associate professor at Michigan State.
It's voluminous, and everything I looked for in a spot check was in there, so I'm guessing that everything else is, too. Worth checking out.