Thanks for posting this Cathy2!
As evidenced by Brandon's pics and other good words on this site, the Dane County Farmer's Market is the premier food attraction in this wide area. If you are passionate about food, you should visit this market. Of course, there is no market in the Chicago area in close to this in size. The amount of vendors is truly staggering, and frankly for some, too staggering. It is common not to make the whole loop. Quantity is something but what about quality?
Know what, I cannot even say that the Madison market has it all. Dairy state be damned, the market, this market has no milk or yogurt (both can be had instead the Sunday Northside market). It has almost all. Meats, grains, baked goods, poultry, fish (trout), organic veg, speciality veg, maple syrup, honey, jams and jellies, and, and...cheese. I do not know of any place better to obtain cheese than this market. Some of the guys, you will only find at the market. I have never sampled a fresh goat cheese as good (and as fresh) as that sold by Fantome Farm. Good luck finding her stuff anywhere else. Not only can you find BleuMont Dairy's award winning cheeses, you will find, usally, its cheesemaker, Willi Lehner. These are some of the more famous cheeses and then lesser known ones like the sheep's milk cheeses from Butler Farms. They are all good.
Beyond the plethora of cheese, there are a plethora of farmers from all types of backgrounds. There are many Hmong who bring to the market both the expected as well as the exotic. There is the hippy guy who forages, stocking his table each week with stuff just as exotic. There are specialists, Butter Mountain, which is pretty much all about potatoes; Tomato Mountain, the tomato (OK, Tomato Mountain can be found in IL), and Snug Haven, their spinach. There are also giants, the equivilants of our Nichol's, like Harmoney Valley and Driftless Organics.
Great food is birthed on farms and by dedicated producers. The best place to intersect with these guys is at a market. There is no better market to do this, that I know, than the one about two hours from Chicago. Do consider a visit.
I should add, as an epilogue, that Madison is an outstanding food town beyond the market. You can get your array of local dairy including outstanding Sugar River yogurt and Sibbey's organic ice cream at the Willey St. Co-op. The co-op has a decent selection of cheese too and Fromagiation on the square has an even bigger selection.
Think Yiddish, Dress British - Advice of Evil Ronnie to me.