If you are lucky enough to have an iPhone you can now use it as a cool new computer interface! Have a look at TouchpadPro for more details.
“Touchpad Pro lets you control your PC or Mac through your iPhone or iPod Touch. It’s got multi-touch capabilities just like the new MacBooks, though without the cost It’s got all the features you asked for, including landscape mode, multi-touch zoom, scroll, right-click, and much more.
Installation instructions:You need a jailbroken iPhone/iPod Touch with Installer.app on it. Here are some great instructions on how to do this.Start Installer and click on the Install button. Go to Utilities. Touchpad Pro should already be there. If it isn’t, go to Sources, and then add Community Sources. Touchpad Pro should definitely be there now.Follow these instructions on how to set up VNC on the machine you want to control and connect to it.”