Speaking as a whisky drinker myself, I can say that the right whisky glass can really make a difference to the enjoyment of a wee dram. Personally, I like to drink my whisky straight, with no ice or water.
I like to use a nice crystal glass for this - and I prefer one which has fairly minimal decoration, but which has good weight. It should feel good in your hand and allow you to appreciate the color and depth of the whisky. An old fashioned whisky tumbler generally works well for me.
Of course, if you like to add something to your whisky, water or soda for example, then you might prefer a slightly larger glass, maybe even a tall glass. It just depends on how you like your tipple I suppose.
Until recently, there wasn't really a glass associated with whisky. However, that seems to have changed somewhat since Glencairn crystal collaborated with master whisky blenders to develop the Glencairn Scotch whisky glass.
This is specially shaped to channel the whisky's aroma towards the taster's nose. This is based on a traditional sherry copita - but the overall design is intended to be more robust for everyday use. It's also a little easier to drink from - you don't have to tip it quite so far back to get at the good stuff - and it has a solid base rather than a stem.
It's also perfectly sized to allow a good measure of whisky (say about 35 ml - or 1.2 ounces if you prefer) to be dispensed whilst still allowing a little room for water. There isn't really enough room for ice, but you probably wouldn't want to add ice to a good whisky anyway!
The short video below will give you some pointers on which type of whisky glass to choose. It's well worth watching.