How to use set driven keys in Maya 8.5

Check out this two-part Autodesk Maya 8.5 video tutorial on creating set driven keys. If you're and animator and your having trouble with your organic or unorganic animation, maybe this is your problem; it's a very powerful tool in 3D modeling in Maya. When ever you come into an object that you are constantly rotating, maybe you should put a set driven key on it, no?