Found by appsgonefree and (at the moment) free, two fun small apps for iPad and iPhone:

AirScanner works a lot like facetime, using the iPhone/iPad camera to transmit video to another computer. The difference is that you're not limited to other Apple equipment - the program sets up the camera as a webcam on the local wireless network, and any computer regardless of type can display the video if the user enters the numerical address.

KaleidaCam is simply a kaleidascope camera app - you can select how many facets, rotate, and other fun stuff.