Note that this is a list of "crazy" things implemented in JavaScript, not implementations of JavaScript.
Funnily enough, I would be very interested to hear of the craziest implementations of javascript.
That's why I clicked the link! I was very curious about what could be considered crazy about a language implementation and having a look at the code.
One of my favourite implementations is the Javascript implementation in Common Lisp. It translates the Javascript code to Lisp so that it can take advantage of the native compiler. It's very slick.
I think I saw that in HN 3 times already from different sites...
Hey cool! My turing machine is second on the list :D Thanks for that.