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 recently returned from vacation, and when I got back I had a new problem with Gmail I haven't had before. I can't connect to Gmail chat at all. When the Gmail chat window tries to load, I get a message saying "Unable to reach Gmail.