Finally, such thing exist! Showcased during CeBIT 2007 event last week, this is an adjustable PC desk / rack from Ergotron. You can easily adjust the height of the keyboard rack to fit your current position (standing or sit) for example. The rack even includes a mouse holder beside the mouse “pad” section, as well as a built-in electric cable design, to avoid the nightmare of having too many cables near the computer.

More pics after the jump.