Apple released a Beta program a few hours ago that'll make you
piss your pants.
They've allowed Windows XP dual-booting on their Mactels.
With the latest application called Boot Camp, you can now install
Windows on your Intel iMacs or MacBook Pro without affecting your
Macintosh data. Windows will run natively on the Mac with the
required drivers.
This unexpected move has become a major subject among Apple-techies
and many applauded Apple for this extraordinary move.
It has been suspected that Apple purposely allow the Running
Windows on Intel Macs contest to run its course before releasing
this application. 
Check it out here: Boot Camp
I'm dying to get a Mac now! 
And I love this part: 
EFI and BIOS
Macs use an ultra-modern industry standard technology called EFI to
handle booting. Sadly, Windows XP, and even the upcoming Vista, are
stuck in the 1980s with old-fashioned BIOS. But with Boot Camp, the
Mac can operate smoothly in both centuries.
