If your goal is to have your ego deflated in Excel, this is always a good place to start .. "You Suck at Excel with Joel Spolsky" .. https://www.youtube.com/watch?v=0nbkaYsR94c but I agree, Shkreli definitely had the whole speed run thing down with Excel.
Funny, I never even noticed that, but apparently so .. his last comment in the description is "Apologies to Danny Hoyle" and a (now broken) link to "You Suck at Photoshop" videos.
If you can separate yourself from the persona he tried to cultivate and enjoy having your excel skills emasculated there both great watches