Well, there are those who LOVE Macs, and those who simply prefer using them to other options. It's the best of both worlds for folks who like the Mac OS but have business or gaming programs that are PC-only.
Plus it's the only machine in the world that boots Mac OS, Linus, and Windows native. That's gonna net some kudos in the geeksphere. ;)
Linus? Argh...
If Apple doesn't put in a blocker of some sort, and they've said they won't, this will send some shock waves through Dell, Gateway, and other PC makers. Apple's share of the market was already climbing, and if people know they can run Windows on the Mac, a lot of people sitting on the fence will be more likely to try one out, knowing they can turn it into a PC if they wish. Most won't, but it provides a good security blanket for the Linus and PC users.