Atleast it drains less computer power then Vista Aero Glass
and it's much more intuitive. Comes with mac's equivalent of expose' which I guess is a 2d version of aero? Aero is amost useless. If it wasn't for this cube thing, i'd have no need for multiple desktops really. I'm not quite sure what the point is yet besides having tons of windows and programs open at the same time.