I've told a couple of people about an app for the iPhone and iPod touch that works as a camera remote shutter release. It is designed by onOne Software and currently is only for Canon cameras, but the Nikon versions is now currently in the works. Right now it is at an introductory price of $1.99 for a Lite version which only allows for shooting only and $9.99 for the Pro version which allows for full control over the camera. If you have an iPhone or an iPod touch I would take a look at this video that shows the app in action.
Video from GeekBrief.TV - Brief 569
