Great for finding home made goods and vegetables. Also very scenic and most of the vendors are happy to discuss their various items with you.
I personally enjoy the home made apple and blue berry pies. They are always so fresh and aren't as sugary/expensive as store bought ones.
Come early to avoid disappointment. North of 11 there really isn't much left. If there is, most of it isn't near as good in quality as the stuff you'd find first thing in the morning!
Obviously cash is king here. Every Sunday in the heart of Unionville main.