So much of our AutoCAD life is spent documenting our designs with 2D drawing views. Did you know that if you design in 3D - AutoCAD makes it a cinch to create associative 2D drawing views? So if your design should change (not that your designs ever change!) the drawing views update automatically saving you lots of time! Dimensions update automatically - it's just all a beautiful thing.
Check out my Cadalyst video for more info (and to see how easy it all is!).
And be sure to try it for yourself!