My friend from "the land down undah" (Australia) Bruce Gow is presenting some classes at AU that deserve some attention in my opinion, if you are schedule to attend AU 2008.
AB304-1 A Better Understanding Of Revit® Architecture Families for Advanced Users
ME114-1P A Better Understanding Of Revit® MEP Families: Advanced
I thought I saw a third for Revit Structure content too but I can't find it right now? Well...I hope you get a chance to attend AU and his classes!