Single malt whisky, usually Laphroaig. Neat with a few drops of distilled water. In a proper glass that enhances the aroma and flavour, not a "rocks glass":
http://www.amazon.com/The-Glencairn-Scotch-Whisky-Glass/dp/B...
http://www.amazon.com/The-Glencairn-Scotch-Whisky-Glass/dp/B...