The book came two weeks ago and I’m loving it. It’s a short book (170 pages) with just content, full of code examples, not just how to do stuff but also how not to do things. I really appreciate this because sometimes is easier to see the problem looking at code that smells. I certainly recommend that if you do any web UI development at all, read this book. I will recommend it to everybody, not matter how knowledgeable you are on the language. I’m embedding the video below, if you want to see more from Crockford visit the YUI theatre.