This is a fun one! Here you compare a grape varietal grown in the Old World (i.e. Europe France, Italy, Germany, Austria, Spain, Portugal) with the same varietal grown in the New World (i.e. North America, South America, South Africa, New Zealand, Australia).
For example, you may feature a Napa Valley Cabernet Sauvignon with a Bordeaux from France. Maybe pair a classic Old World Northern Rhone Valley Syrah with a zesty Australian Shiraz. Or consider an Oregon [link urlhttp://wine.about.com/od/redwines/g/PinotNoir.htm]=Pinot Noir[/link] partnered with a Red Burgundy. Perhaps try a California Chardonnay with a White Burgundy from France. Finally you may give a New Zealand Sauvignon Blanc a spin, side by side with a California Sauvignon Blanc.
In very general, you will likely notice that Old World wines tend to be more subtle in flavor and more reserved in profile than the bolder, expressive counterparts found in the New World wines. Old World wines pride themselves on the grapes' soil location and New World wines may mix grapes from a few locations to build the best bottle of wine.