Ever wonder what was behind that monolithic black display? Here you go: 27" of display-less iMac. (Actually, we're pretty sure the 27" measurement is completely meaningless now that the display is gone.)
Notice how the stand is pivoted fully upward. Without the added weight of the LCD panel, there's not nearly enough force against the spring to maintain the normal neutral buoyancy.
The hard drive occupies the center of the unit, while the optical drive and fan are clearly visible on the right.