This last month I have been present at a few events to speak about Doctrine. I visited Verona, Italy for the phpDay conference and this last week I was present at the first Symfony conference in Paris, France. I also have given a few talks at some smaller local events such as the Nashville Enterprise LAMP group. Below are the links to the presentations on slideshare.
What's new in Doctrine (symfony live)
What is Doctrine? (Nashville LAMP Group)
What's new in Doctrine (phpDay 2009)
In addition to the Doctrine talks I have been talking a lot recently about a new CMS built on top of Symfony and Doctrine called Sympal. Below you can view those presentations as well if interested.