I use Dual screens on a daily basis, couldn't work without. You'll find many other designers and accountants or anyone in any field are starting to use dual screens a lot more. I know of a few schools and colleges where its just dual screening. It just makes more room to work, for a video editing environment I can see the actual raw footage on one monitor, edit on another monitor, or see the edited version on one monitor and my timeline on the other. Just makes it a whole lot easier and gives you more room.

I have a PC and 3 Macs. Not that I use them all at the same time but I've found at times where I can be running back and forth between computers to use them for all different purposes. Anyways, this conversation is off-topic to what the thread was made for.