The history of computing is very, very important to understand how we got here. Sometime I might need to make my own brief diatribe. 

 * [[http://www.documentarytube.com/the-machine-that-changed-the-world|The Machine That Changed the World]] is an excellent, excellent documentary on the history of computing, especially making clear the difference between tabulation and computing. If you don't know what this means, you must watch it immediately. Like all history, when it gets too contemporary it fails, so ignore the AI one for example. 
 * http://timeline.verite.co/examples/user-interface/