It's more of a summer cocktail, but I'm a big fan right now of the Bourbon Palmer.
It's fairly easy to make: 3 oz. Iced Tea, 3 oz. Lemonade, 2 oz. Maker's Mark and can be done with store bought iced tea and lemonade, though it's much better when made with fresh brewed tea and homemade lemonade (1 part lemon juice, 1 part sugar, 6 parts water).
The flavors are each distinctly noticeable, but they also blend beautifully.