I was visiting the Swedish Autodesk website and found a link to an AutoCAD LT screensaver.
Warning! It is pretty boring one so I cannot recommend it. It tells about LT being number one and with 3.8 million users. And it is for AutoCAD LT 2009 so I guess it has been around for a while.
The idea of a screensaver is not a bad one so maybe they can make a more flashy one next time.
Here is the http://www.autodesk.se/autocadltscreensaver.
I then found on the UK site that it was there too.
Update: the links for the screensaver are no longer working.