This may be old news to some of you.

http://www.sitevista.com/

3 min. video tour: http://www.sitevista.com/demo.asp

Let’s you preview a rendered version of your site in just about any browers. It’s not an approximation, but an actual screenshot of your site as that browser processes it. It won’t let us see how our interactive elements work (javascript/ajax). Thoughts?