With so many people excited (and enraged) about iPhone 3GS, it's no wonder we glossed over Snow Leopard's cool UI update, which gives you Exposé control from inside the Dock. Now's your chance to see the video demo:

As John mentioned yesterday, it's an update that resembles Windows 7's amazing Taskbar, in that you can get at more windows and files from the Dock itself, currently considered more of an app launcher than an app manager. Here are the new key attributes for Exposé, and how it works within the Dock: