I wouldn't suggest this road if you want to enjoy driving. It's a really tiny one lane road, with bad surface and some blind corners. On the other hand the environment is really spectacular and there is absolutely no traffic at all. It's a road to enjoy the Scottish nature.
A nice scenery route from Alness village to Bonar bridge. The views are spectacular especially over the Dornoch Firth.
A more scenic alternative to the A82, this route runs parallel on the otherside of the heavily touristic Loch Ness. Extra vigilence is required when cornering on some of the single track sections.
Take the S 65 From Bologna south. This is, I believe, one of Ducati's test routes and if you ride it you'll understand why their bikes handle so well. There are plenty of interesting side roads to investigate as well.
A really nice section through the national park and a beautiful part of the world.