The Air Display app is expected to be out in a couple weeks — and it's yet another great example of the clever things that developers come up with. You'll be able to use the app on your iPad such that your iPad will function as an extra external monitor with your computer, connecting wirelessly. Initially it'll just be available for the Mac, but a PC version is in the works. I'll post again when it's released.

This looks really cool Jim.
This looks really cool Jim. I'm not planning on getting an iPad until it has a front facing camera, but this kind of app makes the wait that much more difficult!