First: this is going to sound weird at first. I might be the only person that wants this.
I've used two-screen setups every now and then, and I find that the separation between them helps me be more organized. On OS X, especially (and probably other platforms), maximizing a window causes it to become the size of the currently open display, which helps me tremendously with window resizing.
I have a rather large (external) display, and I'd like to be able to 'split' it right down the middle, turning it into two side-by-side displays as far as the OS is concerned. Is there an application that allows me to do this?
The Graphics Card is a
NVIDIA GeForce 9400M 256 MB, if that matters.
Note: Perhaps a tiling window manager be OK, although I'm really looking to be able to simulate a physical display so that I get all the benefits from that.