I couldn't really watch it, unfortunately, but the general feeling I saw on Twitter was that this was a vast improvement from last year's WWDC.
Gizomodo has a nice round up of the features announced. HomeKit sounds VERY interesting... it'll be fun to watch vendors try/not try to take advantage of that. And integrating Shazaam directly into Siri is pretty cool - but are people really hearing music that they don't recognize when they are out?
Oh-kay -- I'd say this isn't quite ready for primetime (as it were). Looks like they take a closed captioning feed as the text source, then map hits in that to the "accompanying" video scene. Which seems pretty clever.