Look out, PS2. One analyst says the DS may give you a run for your 115 million units-sold money. "The DS has the potential to be the best-selling interactive entertainment platform ever," predicted DFC analyst David Cole in a recent report on the expected growth of handheld gaming. But the lil' DS has a long way to go; it has only sold 40 million units to date. Cole also suggested that handhelds could ultimately outsell consoles by 2011 lead by the dual-screener. But will it happen?