Wii - 100-120 million
X360 - 50 million
PS3 - 45 million
Note: putting the X360 below 40 mill is ridiculous, like I've seen some ppl do. At a price of $350 in two years it sold 16.5 mill already! 8 mill in 2007. This year will be no different. Or wait... it has huge price dropping potential, that the PS3 doesn't have. 10 mill X360s in 2008. And then you've got 2009, 2010 and 2011 before the generation is over.