[[http://talks.php.net/|talks.PHP.net]] - what the gurus use, but you can probably study up enough to make it through and lead a discussion

[[http://blog.joshuaeichorn.com/archives/2007/05/24/slides-from-azphp-presentation-of-pear-an-introduction/|Joshua Eichorn's Intro to PEAR slides]] - A presentation on what PEAR's all about that he presented at a user group meeting, and is sharing with the PHP Community