Really Great JavaScript Techniques

I read most "JavaScript coding technique" articles with moderate interest as I'm always looking for new ideas and code patterns. I was really impressed, however, with this article by Dustin Diaz, Seven JavaScript Techniques You Should Be Using Today, linked off of Ajaxian. There's some great stuff in there, including some really fundamental, forehead-smacking, ideas I'd never considered. Great stuff!

I'm still continually amazed at how flexible and powerful JavaScript is as a programming language.