A trackpad for the desktop

Apple has developed a desktop trackpad that works like the pads on its notebook computers.  It's called the Magic Trackpad, and it gives you all the convenience of a trackpad with all the functionality of a mouse.  In fact, the entire Magic Trackpad is a button, so you can click it anywhere.  But you can also pinch or spread your fingers to zoom, or swipe to change pages.

This seems like a pretty big step forward.  Mice aren't going away yet, but the trend is headed that way.