Didn't another member try posting a link to their site a little while ago?
You might get a better response in the members only area - some of us want to keep our good driving roads quiet and to ourselves
There's another list here, but it's still not particularly geographical:
http://www.hazelnet.org/tt2002/roads.html
If you'd bought a Tomtom (:P) they've just published a bunch of routes from TopGear:
http://www.tomtomgreatestroutes.com/ - although they may be best avoided now...
And then of course you get onto what means a "good driving road"? One mans single track farm track is anothers "good driving road", while to some the wide, fast flowing a-road that they enjoy can be tedious to drive as you're keeping to the speed limit.