Pivot Corey gave a brown-bag lunch talk titled "There is No Such Thing as a CSS Class" (slides and notes) where he describes establishing a project specific "CSS System." This excellent presentation complements the "Consistent and Effective CSS" talk (video and live demo available) given by Pivots Corey, Ryan, and Chris.

The latest version of Keynote is required to view this presentation. Would someone mind exporting to PDF or something and uploading it?
Hey Erik, the PDF-exported slides are now posted. Thanks for asking.