@Richard.Hein: Analogies are analogies... It's a form of "virtualization", but it is not a VM. It seeks to replace the need for a VM to run software across disparate platforms (this is what a library OS enables). You can learn more: http://channel9.msdn.com/Shows/Going+Deep/Drawbridge-An-Experimental-Library-Operating-System
I agree; just saying that using that analogy makes us think of it that way, but indeed it's a much better solution, and again, I agree that analogies are analogies. I will definitely check out the Going Deep episode … I does seem I've missed a few.