JavaScript: Function.prototype.unbind (for @jugglinmike)

unbind.js

Function.prototype.bind = (function(origBind) {
  return function() {
    var fn = origBind.apply(this, arguments);
    fn.__origFn__ = this.__origFn__ || this;
    return fn;
  };
}(Function.prototype.bind));

Function.prototype.unbind = function() {
  return this.__origFn__;
};