We held our second Lang.Net Symposium on campus at the end of January and the videos from the event are now online here.  John Lam has a great summary of the event here.

I gave the opening keynote in the morning (sorry for the microphone issues, it kept popping during the talk).

I really like this conference for a couple of reasons:  it is one of the only forums where 85% of the audience has actually written a compiler, and we had a good showing from multiple companies not just Microsoft.

Thanks to the dynamic languages team for creating and running the event!