Ethel's is relatively new in the Chicago area, but they now have at least three locations (Michigan Ave., Lakeview and Old Orchard). I've greatly enjoyed the products of the store on a couple of different occasions. They offer a large variety of chocolates that range from the normal (caramels or nuts) to something a little different (PB&J, martini). The PB&J is surprisingly enjoyable. During the summer they also have chocolate covered fruit and the strawberries are to die for! Ethel's also offers hot and cold beverages and the hot chocolate is probably the best I've ever had. Rich and chocolatey, not fake tasting, and not overpowering in its sweetness, either. This store also offers the novelty of party hosting. You can bring a group in for a fondue party or chocolate tasting.
The prices are definitely in the high range, reserving Ethel's for special occasions ($1.50 per chocolate or $4 for a cup of hot chocolate).