Rich's simple made easy is the best programming video I've ever seen, and is ultimately I think what so many engineers need to "grok" to unlock better coding. I'm the "most senior" engineer (chief architect) in a company of more than a thousand engineers, and I recommend it to every junior who asks how to get better.

I will also say I used clojure + aleph to write the only significant application I ever released which never had a reported bug or outage. It ran for seven years and that application was under constant heavy load (more than 10k TPS).