Good for checking number of event bindings in place when using jQuery. From http://ajaxian.com/archives/jquery-bondage

jQuery event binding count.js

jQuery.fn.bind = function (bind) {
  return function () {
    console.count("jQuery bind count");
    console.log("jQuery bind %o", this);
    return bind.apply(this, arguments);
  };
}(jQuery.fn.bind);