Adam Savage is a man who needs no introduction. Most famous as a Mythbuster, Adam spent a number of years working as a model maker for Industrial Light and Magic building models and props for Star Wars, Galaxy Quest, and Steven Spielberg's A.I. just to name a few. Since Mythbusters came to an end Adam has been pouring his heart and soul into Tested, his online love letter to making.
Crafsman (Steady Craftin)
The Crafsman Steady Craftin is a maker channel which provides tutorials on a number of mediums and techniques. The Crafsman tackles topics such as mold making, resin casting, injection molding, and even how to make your own rub-on transfers. The Crafsman's relaxed attitude and unique delivery make this one of my favorite channels to watch, regardless of what topic he is covering.