breeks - 5:54 pm on Feb 13, 2011 (gmt 0)
I went to the one in Santa Monica last year and it was very informative.
They went over the usual stuff plus offering some new information. Gave out free t-shirt, pens, books, etc and then one on one optimization sessions. Best part was the open bar on the roof top after the sessions. Fun day with the Google AdSense crew.