Lots of good stuff in the area. But I tend to favor that triangle from Clayton to Tellico Plains TN to Asheville NC. (I do live in Clayton though)
Hwy 28 out of Walhalla to Franklin.
Hwy 215 from 64 to the Blue Ridge Parkway.
Hwy 276 from Brevard to the Blue Ridge Parkway
Cherohala Skyway from Robinsville to Tellico Plains. (Where you can spend some money at MiniMikes store Tellico Moto...)
The Blue Ridge Parkway during the week from Cherokee to Asheville.
But for the Georgia question MB is on the money....
You can also look at Hwy 197 at Lake Burton, Warwoman Road from Clayton to 28 as both are noteworthy on the eastern side of the state.
Tallulah Gorge is a cool place to stop. If you get there early you can get a gorge floor permit that allows you to explore the gorge floor, otherwise you have to stay on the trail. The walk to the bottom of the stairs is worth it though as there is a nice bridge and waterfalls at the bottom.
Black Rock has some nice views as well. Georgia charges a day pass for parking so if you hit one you might as well hit both in the same day with the pass.
I wonder where that road goes?