Atlanta is great for me because I'm awesome like that. If DragonCon is up in the air, just remember to get those things ahead of time if that's the plan. ;p But yeah, there's quite a bit to see and do here. Like Memphis, there are museums, the Georgia Aquarium, and World of Coca-Cola. There are also the little neighborhoods like Decatur, Little 5 Points, Midtown, East Atlanta, Buckhead, and so on. As Sharky said, plenty of stuff in Atlanta.

Oh, on the idea of DragonCon, you might consider getting a room since my current living situation isn't entirely guest friendly. But I'm sure things can get worked out in the end. ;o