This video is meant to teach you how to create, display, render normal maps and how to create a high poly model quickly.
There is a technical error in here though: when I go and create a cone that is supposed to be laid on the normals, I should have set the 'ray miss check' color to the neutral normal map color (127,127,255) and overlaid them in 'tophoshop'. As I said I don't have a knack with that application anyways...