Our team recently decided to try out CoffeeScript. The Rails asset pipeline makes this so simple, and since CoffeeScript makes JavaScript look like Ruby, it seemed like a good fit. It took a few days of working with CoffeeScript, compiling it to JavaScript and checking the results to really get the hang of it ( is great for this, since you can compile CS right on the “Try CoffeeScript” tab). But it was worth it - CS gets out of your way and lets you get to the code, and more importantly, it’s easier to read.