Vista on Boot Camp
Two quick comments...
I ran Vista Business in Parallels and it returned a Windows Experience Index (WEI) of 1.0. Setting it up in BootCamp on the same Mac, I saw the WEI jump to 5.0. (XP runs great in Parallels, by the way and is where I spend my Windows session time.)
I also found that I could not access external Mac hard drives in Vista under BootCamp until I installed MacDrive from MediaFour. Unfortunately, one down-side of that is that Secunia PSI scans hang if they are attached with MacDrive. I have to disable MacDrive, reboot, scan, re-enable, reboot, etc. Sort of defeats the purpose of PSI running in the background.