On the KillerPHP.com blog today there's a new screencast looking at passing data around a MVC (Model/View/Controller) application.

In this video tutorial from our Advanced PHP series, we look at how to write a very simple MVC (Model,View,Controller) framework from scratch using PHP 5.3, soon to be PHP 6

You can find other advanced PHP videos on this page of the KillerPHP.com site covering topics like Javascript, creating CRUD, making a login system, ORM and much more.