Exposé preferences with the new Exposé button!
I got a new MacBook Pro today and it has the Exposé button that is now used on all new Macs. Instead of being F9, F10 and F11, all the features are on a single button, in my case, F3. What is amazing about this button is that it also lets you quickly access Exposé & Spaces preferences. The shortcut is "Option - F3" (or whatever single button is used for Exposé on your keyboard).