3x24" monitors 5760x1080 resolution running off an ATI HD 6770 (which is nothing spectacular.. 5 year old card.. but works great for DDO).
This resolution is supported in DDO so there is no complicated setup, just select and go.
I love the view and resolution, lots of room for the map, chats, hotbars and still see whats going on.
Not an expensive venture nowadays, and it is great when multi tasking.
I have the same setup at work after using at home for a few years..
I made a good case for it, saves flipping tabs when comparing data between different applications or working multiple applications at the same time.
It does require some desktop real estate, but ultimately well worth the investment.
did end up costing me twice as much at home though.. after my son wanted to replicate my setup..