The YouTube video of him doing an Ebay Analysis [1] was very interesting I thought, both from a technical point of view and another look at his character.
There is definitely something mesmerizing though about watching someone conjure complex data onto a screen seemingly by magic and a few key strokes though. Although really it is just memorizing a ton of hot keys and a bunch of buried menu shortcuts.
https://www.google.com/finance?q=NASDAQ:EBAY (click 5y)
https://www.fool.com/investing/2016/08/11/why-shares-of-ebay...