As more and more users become mobile the need for mulitple screens on the road has become invaluable. Now if you have an iPad, using wifi, you can use it as a second monitor with your laptop.
You’ll have to install the app on your ipad for $9.99 as well and download and install the app on your laptop.
http://avatron.com/apps/air-display
Key features:
– An instant second monitor
– Touch your desktop
– Display it the way you want (ie Landscape or Portrait)
– No wires needed