Stroke of Insight is my favorite, someone already posted it.
My friend tries to crash the event every year but has never been successful, although it is fun to go to the bars and restaurants around Long Beach where the event (for now) takes place and rub elbows with the invitees. Unfortunately (for me) they're moving the event to Vancouver next year.
Although I would also like to add that their yearly fee for live streaming of $995 is outrageous.