Add a little powdered sugar to that Greyhound and you get a Salty Dog.
One of my favorites is an Original Margharita. A little crushed ice in the glass, some premium blanco Tequila and squeeze in half a lime.
Another is G & T. I make ice cubes out of Schweppes Tonic Water and keep them in a baggy in the freezer. Put a few in a glass, add Plymouth Gin, a bit more Schweppes and squeeze in half a lime. No water dilution from regular ice cubes.
Dark & Stormy is another. Crushed ice, Gosling's Black Label Rum, Barritt's Ginger Beer and squeeze in half a lime (we go through a lot of limes!!!).