The Black Sheep is located in Orlando, Florida. I had been advised to visit the store by one of the customers at Four Purls. It's a cute store, but mainly embroidery and needlepoint store. There are two rooms in the back devoted to yarn and knitting and crochet supplies. Although it is not a huge selection, but it is a good selection of yarn. I picked up some Knit Picks DPNs to try and two skeins of yarn. I got a Zauberball ball and a skein of pretty cotton.
I would recommend the store, especially if you also do the other fiber arts.
I will say that the three stores I have visited have been among the most friendly stores I have ever visited.