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Crockford's videos up over here: http://developer.yahoo.com/yui/theater/ are extremely useful, too. A little bit dry, but he knows his stuff.

It's interesting to point out that, while not optimized for it, Javascript (don't think ruby can do this, since you can't pass blocks to blocks) can perform tail recursion: http://warfangled.com/js_examples/fib.js

Crockford's "Javascript: The Good Parts" is also a nice little read.

http://www.amazon.com/JavaScript-Good-Parts-Douglas-Crockfor...

or just use jquery

it's the lispiest (or fp) framework i used (i used prototype before and it felt like java)

Is there a "Dive into Javascript" like there is a "Dive Into Python"?. The DIP style is by far my favorite way to learn a new language.