Gestures are one of the most innovative ways (yet) to interact with any device that supports human interface input. Almost all modern devices, be it smartphones, tablets (that includes the iPad, too), or modern ultrabooks, support some form of gesture input. And for good measure, too, because using that, you can easily get things done that would otherwise require some form of button input, tapping on the screen, or navigating through the system otherwise. Being a long time user of the iPad, I can testify that the multi-touch gestures are, indeed, a blessing.
