Multiple or Widescreen Monitor(s)? [Snap Judgment]

We've extolled the virtues of using multiple monitors to increase productivity and shown you how to make the most of your dual monitors. But is there is difference between multiple monitors and one enormous monitor? Which makes you more productive: compartmentalized screens for your work or one expansive canvas?
Which monitor setup makes you more productive?
( surveys)
If you have a monitor setup you're particularly proud of, upload it to the Lifehacker Show Us Your Workspace and Desktop Flickr group and share in the comments. Photo by totalAldo.