Back in 2006 several of my friends went to GenCon SoCal and had a blast. I couldn't make it that year but had hoped to attend the following year. My hopes were dashed when I learned in 2007 that GenCon SoCal was no more. And the death of GenCon SoCal has left a void in its wake. So, to fill that void we now have Kingdom Con which is coming this April to Southern California. I'm personally hoping that this will be a west coast answer to temple con.
Check out the website, and its forum. This is one of two events for which I am putting money aside with the hopes of attending.