Whether it's Microsoft's Courier or Apple's own inevitable tablet, it's hard to imagine any product besting this 1987 simulation demo of the Apple Knowledge Navigator.

The Navigator is sort of like a Microsoft Courier in terms of its formfactor and project sharing capabilities, while it unfolds more like a Surface on the table. But ultimately, what's really drives this concept is the incredible Star Trekish AI and database search.

In other words, the hardware (touchscreen, camera, etc) looks feasible for both Microsoft and Apple right now, but the software...well, someone's going to develop a system this powerful, but not in this generation...and probably not the next either. [BusinessWeek via Fast Company]