The GDC clip is basically him talking on others people work completely unrelated to what he's supposed to sell. High five!
Mudbox 2015 Overview
An overview of the latest features Autodesk Mudbox has to offer. Mudbox is a digital sculpting and painting software that allows to add high levels of detail to 3D assets. Mudbox is a high-end tool that is accessible for newcomers and allows to create big projects.