Rum Punch

Dark or Spiced Rum — 1 1/4 oz Light Clear Rum — 1 1/4 oz Orange Juice — 1 oz Pineapple Juice — 2 oz Lime Juice — 3/4 oz Red Grenadine — 1/2 oz
There have been some variations of this drink (Wikipedia has some interesting history on the matter), but for the most part it's been a pretty stable drink. Both light and dark (or spiced) rum are called for here, making a nice balance with all the fruit. And whereas the fruits are pretty stable, mixers the world over have been known to go crazy, substituting or adding things like cranberry, cherry, and even lemon to make their own concoctions. The point is to make it super fruity and refreshing.