I was recently lucky enough to take my first trip to Australia. I was there to do two talks, the first on RDFa and its use in Government (given in Canberra, the home of the Australian government), and the second, a talk on RDFa and its impact on the web (given at the Web Directions South 2009 conference).
I've embedded the presentations below, although it's probably better to view the presentations at SlideShare, so that you can see the speaker notes:
[RDFa and Government Data](http://www.slideshare.net/mark.birbeck/rdfa-and- government-data)
[RDFa: What happens when web-pages get smart?](http://www.slideshare.net/mark.birbeck/rdfa-what-happens-when-pages- get-smart)