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I'm not sure if I'd have a use for flashy effects like that, but the videos are sure impressive.
Most importantly, it works with a puny video card like the Intel 810, as it should. All these fancy desktop effects are nothing to any post-Geforce video card.
This is why I bitched so long about the full Longhorn interface probably requiring DirectX9 capable cards. Here we see (also in OS X of course) how it can be done with far less hardware.