A couple of weeks ago I finished the machine learning Coursera class by Andrew Ng. This has been a recommended supplementary class by some of my schoolmates doing a machine learning focus at Carnegie Mellon. My roommate had just taken it and as the only person on the team that actually followed through on the class, she was put on a machine learning project. I had someone to take it with, so I spent some weeknights and some weekends working on it.
I thoroughly enjoyed the class.