You want one.
The niftiest feature of the new Macbooks and Macbook Pros - four-finger multitouch trackpads. Swipe up with four fingers to hide all your open windows, then swipe down with four fingers to bring them back. Swipe down again to show all your open windows, then swipe up to return to what you were doing. Side note: They’re putting up Christmas lights on Regent Street already. Isn’t it a bit too early for that? (Previous Apple Store hijinks on JRE. Even more Apple Store hijinks. Does this make a tricontinental Apple Store trifecta?)