Another quilter mentioned two in the Atlanta area...but here are my favorites: Intown Quilters in Decatur and Whipstitch Fabrics in an industrial area of NW downtown. Intown carries my favorites: 30's, batiks, brights of all kinds, and novelty fabrics. No 1895 repro's here! The classes are great, the teachers funny, and the staff will leave you alone to wander and think if you want!
Whipstitch is very new but has fabrics that are edgy and fun. It's a small shop but worth looking for if you're in the area.