Animating HTML Text Change jQuery

I am attempting to change the text of a HTML element using javascript and jquery. This is my code so far, and I can't seem to get it to work. I have googled it and can't seem to find anything on it.

$("div#title").hover(
    function() {
        $(this).stop().animate({
            $("div#title").html("Hello")
        }, "fast");
    },
    function(){
        $(this).stop.animate({
            $("div#title").html("Good Bye")
        }, "fast");
    }
);

Any help would be greatly apreciated.