VNC is a system for sending graphics over networks, and it's used mainly as a way to control one computer desktop from another one.

I worked on VNC for a couple of years, writing the original Windows and Windows CE viewers, and the first Windows VNC server.

Here's the original video we made about VNC:

And here are H.264-based MP4 versions which you can right-click and save to disk:
Good quality (67MB) Small (32MB)

The official home for VNC is now at RealVNC, where it goes from strength to strength.