TN4x4Xterra-- I missed your post. I've only been in Knoxville a short time, so I haven't gone many places. I've camped at Lotterdale Cove, which is a small state owned campground. Lots of campers, but its close to our house so for a quick trip, like an overnighter, its nice.
And I've camped out at Indian Boundary. I like this one better, but its further from the house, and really only worth it if we go for more than one day. The primitive campground is usually pretty quiet, and just off the lake. Plus there is a path around the lake, and a there is a trout stream near by.