As Carl Prothman says, check it out! The TechEd 2003 materials are online.
I went through Scott Guthrie's ASP.NET Tips and Tricks, and I must say that Microsoft Producer for Powerpoint with which these slideshows were presented is fantastic. (I haven't seen or even heard of Producer before now, I'm embarrassed to confess.) What is so great is you get the audio presentation with the powerpoints (which itself is wonderful), but if you want to jump ahead to a particular slide, the audio jumps ahead, too. That feature really adds to the efficiency (and fun!) of absorbing the session high points.
I was bummed I couldn't get to TechEd 2003 this year, so I want to personally thank whoever was responsible for making the conference materials available at http://microsoft.sitestream.com/.