Mike did a livestream today on the Dr. Beasley's channel; I've only watched about a third of it so far but it's excellent (don't blame me if it goes south in the part I haven't seen yet):
The first hour is Mike's presentation, the last 25 minutes is Q&A, which had a few interesting things, but you won't miss too much if you only watch the first hour. Great history of buffing pads and overview of past and current products/trends.
