Too many screens
As long as we're talking about dual displays and the rumoured 30" Cinema, I just wanted to chime in that you can have
too many screens and
too much screen real estate.
At work I have a 5 monitor setup (all Sony PremierePro 24") each running at 1920 resolution. They're set up in an arc around me, bezel-to-bezel, and they're all connected to a Matrox solution for multi-monitoring and individual x86s and Macs for simple dual displaying. (They have fast input switching so you just press a button and you go from one continous screen dedicated to one Matrox system to a combined cluster with:
dual spanning connected to a mac setup using its private video card, dual spanning conected to a x86 setup using its private video card, and one monitor screen that's mirrored to a background Plasma HDTV for real-time playback. (I just realized it sounds like I'm just trying to make everyone jealous, but I actually have a point
)
With that much space, it takes a lot of effort to use all the screens. Usually I'm just dedicated to two screens at a time. If I had a hi-res 30" Cinema, I'd either have to sit farther back (and loose detail) or have to constantly move my head to manage everything. That gets really tedious when working with programs. Think of the small movements made with a mouse to get around screen space and then realize your neck will have to do an exaggerated version of that movement all day. 30" flat panels have their place, but as TVs, not computer lcds. The only way to make something like this work is to have an arced 30" so that your face is always equidistant from the screen (and I'm sorry to have to mention this, but that was demonstarted in the workspace project from Microsoft last year
)
Ok, 'nuff of my rant on the evils of too big, I know someone will always want bigger even if it is less funcitonal!