For good for try Einstien's on Juniper Ave. in mid-town, little expensive tough. For Cheep there's Tortillas on Ponce Ave. although the decor is deconstructionist to say the least (were black clothes or blue jeans). There is also the Bridgetown Grill for a great Jerk Chicken, and the Three-Dollar Cafe in Buckhead for a large beer selection (no Olympia though)
Atlanta, GA