I'm with Dave Hanson on the A'Bunadh - and I love Robin Laing's song about it! I might add a wee bit spring water since it's cask strength! And if you go to a whisky tasting you'll find how different the same whisky can taste neat and then with progressive amounts of water added.

John Mackenzie mentions Caol Ila, but there are so many of them! On holiday in Islay we got presented with a "menu" at the bar of all the Islay whiskies, and I think the various Caol Ilas took up 2 whole pages!