I think the only thing could stop Nintendo sells will be another generation of consoles where there will be next market's reset.
There are simply too many excellent Wii games coming this year for a Nintendo's market slowdown. Btw I'm really happy Microsoft and Sony caught the bounce and responded with something new to Wii's motion based Wiimote. That is the way to go in order to have a true next gen console generation... I can't wait for next 2-3 years to pass and have it in my hand!
_________________ God created Paula so that Allister Brimble and Dave Whittaker could do music