How to Use your iPhone/iPod Touch/iPad as a 2nd monitor on OS X
Looking for a bigger monitor? How about a smaller monitor? With a little app called Screen Recycler, you can hook up your Apple iPhone/iPod Touch/iPad and use it as a second monitor. The app is available in the Apple App store and will let you view things on your hand held Apple device. No need to always think bigger, or rush out to the store to buy more hardware. You may already have what you need at home!