It took a little while to figure this out. But thanks to iSlayer, I’ve learned that, with the new aluminum keyboards for Macs, using Command+F3 will clear away your application windows to show the desktop. It’s awesome and relatively intuitive, what with the icon of F3 showing Expose as it may be. I like this feature of OS X and I’m glad it wasn’t eliminated from the new keyboard structure; essentially, it allows me to see everything on my increasingly uncluttered desktop with a bush of two, magic buttons.