Some fun stuff!
Hidden in Autodesk Express Viewer, AutoCAD 2008, AutoCAD 2005, AutoCAD 2004, ADT 2004, AutoCAD 2002, AutoCAD 2000i and AutoCAD 2000. There is nothing in AutoCAD 2006 and AutoCAD 2007 so don't bother to search for it.
Autodesk Express Viewer Hidden Fun here.
For AutoCAD 2005.
Have you found the Credits list of AutoCAD 2004 yet? It's really cool with music, animation and all!
Try these keys: Y for cheers, 4 to toggle between some visual effects options. Use the mouse buttons (left, middle and right) to navigate.
ADT 2004 - The Team / Fun and Games:
AutoCAD 2000 - It's there too:
And some fun for your kids.
Club Penguin according to Saraapril.
Test of multi web browser clipboard