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?
I have a problem. Three times now, my dvd rom has been 'uninstalled'. Each time reinstalling the driver had not fixed the problem, and I have only been successful in getting it to work, by doing a system recovery. The system restore will not work.