I am an avid advocate of dual monitor set ups. I had a laptop for a year or so and a monitor to go with it. At that time I was only hitting the tip of the iceberd by just throwing Photoshop palettes to the other window.

These days *everything* goes to between the the two monitors. Heck, even my desktop mess of icons spills onto both screens!

And I really am an advocated - serious - I own *four* monitors, and have convinced all over my 5 room mates to get dualies too. I could never, ever even consider going back to a single display again. Ever.