I am busting with news from Montreal's ConFoo conference, which has about 600 attendees. This is the first time I am attending, and I am told the first time there are Postgres-specific talks. I gave two Postgres talks yesterday (as I mentioned), and Ilia Alshanetsky gave a great Introduction to PostgreSQL talk (slides). The talk was smoothly-presented and well-received. I have seen many presentations about specific Postgres features, but few that give a general introduction to Postgres, particularly with an evangelical focus; in fact, the last great one I saw was in 2005.
There are some amazing talks at this conference, and the percentage of talks that are helpful to me is very high. I saw JVM Internals for Dummies, which explained how the OpenJDK HotSpot optimizer chooses to inline function calls and convert byte code to CPU instructions by using run-time profiling. This is similar to the discussion the Postgres community had about inlining some of our sort code for Postgres 9.2, except the JVM makes the decision at run-time using profiling, while we have to make the decision at compile time because we use C.