Apple's Trackpad

I thought that the Apple's trackpad is great. Although the pad has only one button, you can do a lot of stuff. They magic comes from its multi-touch function. You can 'right-click' by using 2 fingers and scrolling a page vertically and horizontally with 2 fingers. And when you scroll the page vertically and holding the Command button at the same time, you can zoom the screen in and out.

Here's a video about the trackpad ---> Trackpad Tips