Ask YC: Where do I find good Video/Screencast service?

We are about to launch our site and we want one professional video/Screencast to be created that clearly explains what the site is about in 3 to 4 minute video.

We really like Xobni video. http://www.xobni.com/learnmore/

We have written the entire script and screenshots needed for video. We just need someone to create professional video like Xobni video, but have no idea where to find it.

I found couple of guys on forums and also talked to guy who created Xobni video, but seems like they are really busy with other work at the moment.

Please let me know if you know any professional services.

Thanks in advance,