This is one of the coolest things I've ever seen put out by a technology company. It's not a product, it's an advertisement...but it's awesome. It's an explanation of Hitachi's perpendicular technology done in the style of schoolhouse rock.
Click here to watch it
Just goes to show that if you make an advertisement entertaining, people will not only not fast-forward through it, they will actively seek it out and watch it over and over.