If you know someone that works there, tell them you might be interested and ask them to take you to lunch.  They'll be happy to as we're trying to find more people.  The Irvine office just had an open house.  It was the first time we've done one and I don't know of any more scheduled, but if anyone's in the area I'd be happy to let you know if we have another in the future.  If those aren't options, then just apply anyway.  We always take candidates to lunch when they interview.  Worst case is you decide it's not for you and you have to turn down an offer, but I've been very happy there.