The second of our series of Billy's advice for gifting has arrived! Our Holiday Guides are the most important, for one simple reason: if you give a co-op game, chances are, you'll get to play it! That really makes the joy of giving just that much better, doesn't it? Here's our list of the best co-op titles available for the Wii and DS, sorted by who you're giving them to. Also, look for another special celebrity appearance!
