The best chocolate in the Madison area, in my mind. Delicious fillings, amazing chocolate exterior, and really friendly folks willing to let you sample whatever you'd like. There is usually no line so you can take your time and chat with the salesperson at the desk about what you'd like. They have 2 piece, 6 piece, 9 piece, and 18 pieces. Mixed with nuts and mixed with no nuts.
Pricey, but delicious and worth the price tag.