We rented a cabin with some friends in Logan, Ohio. As I read the directions to get there, I knew in the back of my head that there was a great road we would be on: OH 664. It is in beautiful condition with some really great turns and stretches of turns. If you're in the area, it would be great in a sports car or on a motorcycle. We just had my Saab wagon, but it was still really fun. Its no 555 or 536, but still a nice drive. Oh, the cabin with 18 late 20s people was fun too!
Side note: on the way back today we saw 30+ state highway revenue collectors from Zanesville to Canton.