The project Max Feingold, Yevgeniy Rozenfeld and myself did is called Palantir:

The program allows one to view windows open on a different computer. We implemented the system as a client/server application. Both client and server are implemented in the same Windows executable. The program puts itself into the system tray and provides a convenient MFC interface for opening client connections, sharing out server windows, changing communication and program settings, etc. Upon startup, the program initializes a server that listens on a known port for client connections.

Possible applications of this technology may include:

• Lab administrators monitoring desktop windows on many computers from a single workstation.
• Corporations monitoring their employees' desktop activities.
• Professors demonstrating the use of a particular program to students across the network.
• Communication with shared images between graphics designers.
• Graphics-based talk applications.

You can dowload the most recent version here.