Bring your cash, because the food will definitely suck you in! From the delicious baked goods - I'm a cookie monster and I can't leave without Stella's Spicy Bread - to the cheeses and my favorite bee man (the one with the hive hat), this is a definite must-go place if you happen to be in Madison on a Saturday.
Parking is a little tricky sometimes, but it's totally worth the road frustration. Also, I'd like to caution the people who don't like crowds of people and walking at a snails pace; it can get a little claustrophobic at times with people inside your bubble (but you can't help that).