With all the iPods and now the affordable miniMac luring more users to the Mac platform, Apple's share of the home computer market is bound to really take off. That will encourage developers to design and port ever more apps for the Mac, which will in turn increase sales through out the product line.
Tiger looks phenomenal. With the attention it is going to attract at its release boosted by torrential sales of the miniMac, we are going to see an amazing migration to Apple.
As long as the world doesn't get blown up before the second half of the year, that is.