In my travels I've found that a lot of people don't know that the TechEd sessions were recorded and are available FOR FREE to watch on-line or download
So, if you couldn't make it to the Gold Coast in September, or even if you did make it but found you had to miss a session due to a scheduling conflict, go to
TechEd Australia 2012
One of my favourites was presented by Ben Armstrong, owner of the “Virtual PC Guy" blog and a Senior Program Manager in the Windows team.
Hyper-V Performance, Scale & Architecture Changes