This little application sounds really interesting, it basically allows you to turn your iPhone into a trackpad and take control of your Mac. Taken from the publishers website; "pearPad is a little application that turns your iPhone/iPod Touch into a remote trackpad and keyboard for your Mac. This comes in handy for example if you connect your Mac to an HDTV to show off some pictures, browse the web, or give a presentation. pearPad gives you almost full control in your palm." Check out the website here for a free download.
