On the KillerPHP blog today there's a new screencast tutorial - part one of a series about form validation with javascript.

In this series of video tutorials, we look at Javascript and PHP based form validation by discussing what form validation is, why you should use it and then build an example using PHP and JQuery.

You can view the video via the in-page player or check out some of the other great videos from the KillerPHP.com site.