Gamasutra reports that the DS is officially the fastest selling console in Japan. The console has taken just ten months to sell 20 Million units. From the article:
"As noted in the report translated by consumer website GameSpot, the Nintendo DS has been credited with reversing the shrinking Japanese games market, with Nintendo DS software and hardware dominating sales charts for at least the last twelve months. With a population of around 128 million, these latest results show that nearly 8 percent of Japanese consumers now own the console."