My question does primarily concern Project 2010, though it would be applicable to other Office products such as Excel, which can tend to span several horizontal screens.
Seems like an obvious question to me, but I had a hard time finding anyone else who had addressed this issue with Office products in specific (though there were several Google hits for the same question in Visual Studio).
With Project, I would love to be able to handle my task list in the left-hand screen, and see the corresponding Gantt chart laid out on the right-hand screen. For now, my solution has been to drag the window across both monitors, but that's sloppy and the Gantt chart does not zoom in/out correctly to account for the additional space.
It would also be nice to utilize this feature in Excel. As an engineer, I often track projects with spreadsheets that span 2-3 landscaped 11" x 17" pages. If I could spread the view over 2 screens it would make my life a lot easier.
Maybe there's a setting, or a 3rd party application that I'm missing?