Jack Bauer hCard+RDFa Example -- not really from Jack but it's a good example...by Toby Inkster who seems pretty interesting.

weborganics has some good ideas forwarding the work of Mark Birbeck

I am still working... slowly but my example has more stuff...and I am far from knowledgeable about this stuff

On twitter markbirbeck says .... The RDFa Primer has just taken a major leap in quality and readability: RDFa Primer - Bridging the Human and Data Webs - Editors' Draft