Impalement Techniques

Here is a short movie of Massimo Polidoro, presenting the medieval armor in Wallachia and Vlad Dracula's impalement techniques and the psychological effect of the view of impaled people. This is a short sequence from a documentary he co-hosted for Dicovery Channel.
To make a distinction between the real and the fictional Dracula Polidoro uses Vlad Țepeș to refer to Vlad III and Dracula to refer to Bram Stoker's character.
Seems really good documented, I would like to see the full documentary: