Comikaze is scheduled for the second weekend in September in L.A. Get your tickets to the event. They’re having a pretty decent-sized 40k tourney as well while there.
From the website:
Stan Lee’s Comikaze Expo presented by POW! Entertainment
Saturday, September 15, 2012, 10:00AM – Sunday, September 16, 2012, 6:00PM
Los Angeles Convention Center Tom Bradley Hall, 1201 South Figueroa Street, Los Angeles, CA 90015