In November 2012 I spoke at the Joomla World Conference in San Jose, CA. (Conference Site).
Kyle Ledbetter and Mark Dexter are presenting on Joomla 3.0
Kyle works at EBay – and they push things to the limit. They needed a new UI – so they chose Bootstrap from Twitter – an awesome open source UI LIbrary that's really taken the world by storm… (I LOVE bootstrap)