I took Andrew Ng&#x27;s machine learning class twice (scored &gt;99% both times). That was my favorite. I have been working in the AI field since the 1980s, including a lot of neural network applications, but I still found his class to be an incredible source of practical knowledge.<p>Other favorites were Martin Odersky&#x27;s functional programming with Scala and Erik Meijer&#x27;s Haskell class at eDX.