Microsoft has put out good operating systems, whether you like to admit it or not. Like Windows 2000 and XP.. yes Windows 95 and 98 sucked.. but they cleaned up their act.
Lol - some of the Technologies being put in it and XP and 2003, are just plain great for programmers and eventually everybody through that. Indigo with great Communications Technologies, Avalon with classic graphics abilities. WinFX in time. All classic. I can't wait myself.