Since the first time I actually used Windows Vista's Flip 3D, I recognized it as an innately flashy part of the OS and also an innately useless one. It only shows you one window at a time in reality and that's something you could do on your own. Exposé in Mac OS X is actually something practical and usable which is easily demonstrated by the fact that I cannot imagine a pre-10.3 machine simply because it lacks Exposé.
Windows users are, unforuntately, not all evil creatures and they have the right to some amount of happiness. Luckily for them, someone has coded up an Exposé for Windows Vista