I finally noticed that my session from Mix '07 is online - Design in Motion: Video Production Workflow. It includes a full streaming version of the presentation (the PowerPoint/Demos, not me) with my mic feed. I'll warn you - we had an excellent party at Pure the night before so my voice was pretty ragged.
You can also download the .pptx of the presentation, and downloable files (including for Zune and iPod).
It's cool stuff. If anyone's on Mac and can't open a .pptx, let me know and I'll send you a different version.