I've been considering "switching" to a Mac, or at least dual booting on my laptop and keeping a PC as my desktop for gaming. However the whine and heat issues with the MBPs have quite honestly terrified me and made me wait until they've been ironed out. Then just when I was about to purchase a MB I saw that their integrated graphics card won't meet Vista's minimum requirements. That just won't do for a laptop I plan on dual-booting for 2-3 years at least.
Not all Macs meet Vista requirements
http://www.tuaw.com/2006/05/19/not-all-macs-meet-vista-requirements/
Not all Macs meet Vista requirements
http://www.tuaw.com/2006/05/19/not-all-macs-meet-vista-requirements/