I think if you spend the day working in front of a computer you will find some uses. For example, I use visual studio all day and that alone requires all the screen you have. Checking emails, word processor, anandtech, etc, require many clicks on the minimize/maximize buttons. Annoying. Two monitors would be perfect for me. I'd keep the Studio in one, test and do wathever in the other. I used a 2-monitor system around 1992, and later multiple desktops on the same monitor that would change at the click of a button. That was a cheap and effective solution, but I'll forget applications running on the invisible desktops chewing up resources. This was one of the many other neat ideas that never were adopt by Windows.
Cheers,
GreenGhost