While important, advanced memory management and protection are invisible to most Mac users. What they'll notice is the zoomy new look of their Macs, which some have likened to colorful bubbles. You'll still find the Mac's familiar motif of windows, menus, buttons and icons. But they won't look much like what they used to. Icons will have the sharpness of photos.
Menus are transparent and cast shadows.
Windows have rounded corners, and the buttons are colorful little bubbles that resemble drops of water. There'll be something called the dock running along the bottom of the screen. Think of it as a Windows start menu on steroids. It will display sharply rendered icons that represent documents and applications. These icons shrink proportionally as new items are added to the dock, so that it always fits along the bottom of the screen.