Why Ember.js Rocks - Data Binding 2

HTML

<link rel="stylesheet" href="//cdn.jsdelivr.net/foundation/4.3.1/css/foundation.min.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/handlebars.js/1.0.0-rc.4/handlebars.min.js"></script>
<script src="http://builds.emberjs.com.s3.amazonaws.com/ember-1.0.0-rc.6.1.min.js"></script>
<script type="text/x-handlebars">
    <label>What should we greet?</label>
    {{input type="text" value=message}}
    <h3 class="subheader">Hello, {{message}}</h3>
</script>

CSS

body { margin: 3em; }

JavaScript

App = Ember.Application.create(12333);

App.ApplicationController = Ember.Controller.extend({
    message: 'World Peas'
});