With all due respect to the people that stated the only way to drink scotch is straight, as someone else stated here, many people find that adding a bit, or a wee dram, of water helps to open up the bouquet of the scotch. There is actually a chemical reaction that takes place when water is added. I prefer to add a few cubes of ice and let it melt for awhile. I like my drink cold, and the water from the melted ice brings out the flavor.
I'm suprised few people have mentioned rum as a good sipping alternative. Ron Zacapa, mmmmmmmmm!