The nice thing about it is that it allows you to break out of nesting hell while still being prototyped... e.g. window.setTimeout(this.foo.bind(this), baz);

Since .bind is essentially currying, you could imaginably do window.setTimeout(this.foo.bind(this, bar), baz) as well, if foo is dependent on bar (timing out a request `bar' or something like that).

And in JS is really easy to create an abstraction for this issue:

    function wait(o){
      return setTimeout(function(){ o.action.call(o.this) },o.delay*1000)
    }    

To use it like this:

    wait({
       action : function(){ console.log(this) },
       delay : 1,       
       this : this
    });