I work on a laptop and I have a 19" widescreen hooked up to the laptop, so I can have some applications open on both monitors.
I can have a spreadsheet opened on the widescreen and a Word doc on the laptop monitor, documenting financial analysis, etc. Or I can have my icq chat windows on one, and doing my programming and web browser viewing on another.
Using Windows XP, its easy to have this dual monitor capability.
I found this snazzy new device from Matrox, that allows you to connect two external monitors together instead of my current limitation of one external monitor.
Check out the Matrox DualHead2Go device.
Simply plug the box into your laptop, and the two connections to two monitors and you've got some major screen real estate.
With a list price of $229, its an economical productivity enhancer when you can work with more viewing options.
Fight the double vision!