I'm shocked I have to say. I never REALLY expected to see OS X on a x86 machine. That said, provided Apple doesn't allow other PCs to use OS X (which is what I've heard) I see no reason to object to something that will ultimately provide faster, better and possibly cheaper computers to Apples customers.
That said I'm starting university in September. As such I'm planning on purchasing a PowerBook in September. I don't run very resource intensive programs. I just wanted a laptop that would last a long time and ran OS X. I don't want Windows. I'm fed up with Windows PCs. I am pretty certain I will still buy a PowerBook, but I am worried. My course lasts 4 years. Will the PowerBook last 4 years? I don't know. I have a sneaking suspicion that Apple will try to support G4s for that long (considering that most people get a new computer every 3 or 4 years and that Apple isn't releasing x86 Macs for another 12 months) and that so will software makers, but I am worried, nonetheless, that at some point during my university career I may find my PowerBook no longer cuts the proverbial mustard. 4 years is a long time, and there is a possibility I may continue on to Masters (which would yield another year of study) on a students budget would I be able to afford the possible change of laptop? I suspect I would, but it would not be a situation I'd like to put myself in.