With Boot Camp from Apple you can load Windows XP on an Intel-based Mac and create a dual boot system. That is you can boot to MacOS or WindowsXP.

That’s nice but what I would really like is the ability to natively run WindowsXP applications from within MacOS. Then you could run the few windows apps you need without ever leaving the Mac environment. Hopefully that will come.

Followup: Cringely predicts that native Windows XP (but not Vista) apps will appear on the Mac in an upcoming release in his latest post.