The new Apple MacBook Air's minimal design is pretty amazing. Take as much out of the laptop as you can, use a unibody frame and use a higher tech solution for a harddrive (solid-state flash memory) and you get this:
Its mostly battery, with the mainboard that bit at the top. It’ll be really interesting to see how this design scheme plays out across the MacBook and MacBook Pro line down the road.
Say what you will about Mac vs PC, Apple knows how to design beautiful hardware.