A helpful video on ICE

<iframe src="http://player.vimeo.com/video/19028797?title=0&amp;byline=0&amp;portrait=0" width="400" height="300" frameborder="0"></iframe><p><a href="http://vimeo.com/19028797">1: What does ICE do?</a> from <a href="http://vimeo.com/user4895541">Paul smith</a> on <a href="http://vimeo.com">Vimeo</a>.</p>