Also, my talk wasn't focused on the Quantum Computing end (although that would have probably been a neat talk I don't really know enough about that end). The correct title was "Complexity Classes Intermediate between P and NP". In fact, most of the interesting quantum classes don't fall into this category. The only one I think that does that's fairly natural is ZBQP, which is a very interesting class but wasn't something I talked about at all.
Edit Thanks for fixing that.
LW Boston had a megameetup last week, and it went well. There were a few presentations and an exciting unconference. Here are some materials from the presentations.
Direct Detection of Classically Imperceptible Dark Matter through Quantum Decoherence
Jess Riedel