So we're s.l.o.w.l.y... getting there with curved LCD desktop monitors, but with the manufacturers being highly conservative so as not to get too far ahead of their user base.
The latest Samsung SE790C monitor has a screen curvature radius of 3 meters, i.e. your view will be 'correct' if you sit three meters away. well I'm using a computer monitor right now, and I think my eyes are roughly 60..70cm from the screen. It's not rocket science, the screen should curve just enough to always present an image perpendicular to your view so the current 3 meter curvature is wayyy off the optimum.
So here's a prediction... screen curvature will gradually increase until the sweet spot is reached.