I just spent a fantastic week in the south of Italy, in a city called Sorrento. It is close to sites like Capri, Pompeii and the Amalfi coat. Highly recomended!
While I was there, I got to know the owner of a local wine-shop. When he heard of my interest in Whiskey, he got very excited. Some days earlier, he had got hold of some bottles of Grappa that had been matured for 10 years in Whiskey-barrels. I tasted it, and it was deliciuos! It had the fruity taste of a grappa, and the compleixity of a whisky. It even had some peat left in. I just had to buy a bottle.
If you can find it, I will recomend you to have a try. I have not been able to find any english information about it on the net, just som german: http://vuithier.com/grappa-whisky-dellavalle-p-775.html