This is probably the most comprehensive metalworking video to date: Ron Covell thoroughly demonstrates basic hammer and dolly techniques, and shows how to do high-level metalwork that requires no filler.
In the video, he starts with a 1932 Morgan in very bad condition, and goes through every step of perfectly restoring the body. Great coverage of hole filling, patch panels, wired edge repair, rust repair, TIG welding, metal finishing, and shrinking. You'll see how top-quality metalwork can be done with very simple tools!