Write a Compiler (with David Beazley)
Every year I tend to take a course somewhere — the topics are quite diverse, ranging from applied math to psychology (it's fun and helps me stay sharp). Normally I choose something in Stanford or MIT but this year I stumbled upon the Write a Compiler course by David Beazley and I couldn't resist. I must say, a week is a long enough period to show you what you are made of ...