Rails 3.1 shipping with CoffeeScript
Normally, I'm skeptical of "change the syntax and your life will magically get better, no matter how headachey interacting with the rest of the world will become", but then Thomas showed me Sass and it was lifechanging.  (After you've gotten around Sass, CSS looks like Assembly code to a web programmer.  I mean, sure, you could write it... but you'd need a damn good reason to.  If you haven't tried it yet, make yourself an excuse for a weekend project -- it will make your life better.)  Has anyone found CoffeeScript to be lifechanging?