I happened to be channel flipping last night and by chance came upon the American Experience documentary on PBS about the SF Earthquake of 1906. It really made me understand at a much deeper level how this fueled the East Bay's growth from 1906-1918 (when World War I began). You can't see the show online, but you can view some of the photos of SF in 1906 here.
You can rent the program from Netflix
or buy it used on Amazon for $8.