Until I see first hand what it can do, I better bite my tongue. Currently I have a dual G4 1ghz machine running Gentoo Linux and Mac On Linux which runs 10.3.7 in a window. There's no emulation of OS X so its very fast. Then if I'm suckered enough, I can start VirtualPC 6 with XP all without taxing the system that much. If these new Intel's can match that, I might consider a Mac Mini.
I'd say so, given that Intel is building virtualization into their chips. BTW, latest rumor is that Apple is planning seamless virtualization for the next version of OS X.