[tmaly]

It might be too much to ask, but I really liked how the KnockoutJS tutorial was presented http://learn.knockoutjs.com/

You basically live code to learn the basics right in a browser. It would be cool to have something like this for the book

[noir_lord]

That demo is the reason I picked knockout years ago, never regretted it either, knockout was/is amazing and they understand backwards compatibility and API stability.