Well, that was anti-climactic.
Installing XP on the JAD iMac was a very smooth process. Of course, Boot Camp is from Apple, so why would we expect anything else? But it's not like this is an emulator or something: the hardware inside the current gen of Macs is essentially the same as that of the other Windows/UNIX/Linux-running computers in the world.
But it's nice to know that I have one computer on the desk that can now run virtually 100% of the software on this planet. The other boxes out there cannot say that.