My talk is over (hooray!) (what will I obsess about now?) (don't worry I will think of something).
Other than my accidentally hurling a microphone at the audience, I think it went well. You can catch the telegraphed version via Eileen Joy's Twitter feed. Yes, she sat in the front row and reduced my talk into a series of 140 character tweets. I've never seen a digit move so swiftly: it was like finger ballet.