I've become a bit of a farmer's market nut (as well as a yasai otaku) since coming to Japan. Folks told me before arriving here that they didn't exist. (They said the same thing about farms and gardens, too, but luckily it took just a couple of walks and bike rides to knock that misconception out of the park.)
Anyway, I've also been lucky enough to find a few folks interested in reading about my market adventures. Summer Tomato, a food-health-all-around-nifty-blog out of San Francisco, is one of them. Discovered in the course of the 2010 Blogathon, it's become a regular read. I wrote about Tokyo's United Nation's University Market in October (one of a number of markets in the city, by the way); the Dane County Farmer's Market in February, and now Osaka's Odona Market can be added to the list.
P.S. My dearest assistant is working up a video of our visit to the Odona Market, too, so get your popcorn ready!