Basketball isn't an individual game — or at least not at its best. But the addition of a single player can make an enormous difference, as Chauncey Billups proved when he joined the Nuggets early this season. In a matter of days, the Nugs were defending better, sharing the ball more often, passing up contested shots to get their teammates better ones, demonstrating discipline rather than a lack thereof, and generally playing like a team. Granted, he's not a miracle worker, as a late-season skid has demonstrated. But he's improved the Nuggets more by his own excellent example than even the biggest fans in his home town might have dreamed.