ARS Technica takes a look at some of Apple's latest patent, it includes improvements to iPod and iPhone devices and also a technology that enables automatic adjustment of the perspective of 3D objects based on the position of the user's head. You can read all about it over here.
In "Systems and Methods for Adjusting a Display Based on the User's Position," Apple proposes a display that can automatically adjust the point of view and angle of 3D objects, or even 2D objects arranged in 3D space, based on the changing position of the viewer in relation to the display. Example: imagine you are viewing some 3D object on your monitor. A sensor could let the computer know when you move your head to the left, and the object would subtly change position and/or rotation so you could see the left side of the object. Alternatively, you could move your head up so you could see the top better.
The same technique could be used to display 2D objects arranged in 3D space. Apple uses the example of windows on the desktop; suppose one window is obscuring details on the window below it. Moving your head to one side or the other could change the relative positions enough to see whatever details are hidden.