Having said that, I will volunteer at work for ANY trips to CA for one reason: In-and-Out ! If there was some way to buy in bulk and ship back home, I would do it. The bean counters love it too... my daily's are pretty cheap because it's about the only think I eat for 5 days.
True story, when my son was returning to Ghana (Peace Corps) from a visit home, he made me stop at In & Out on the way to the airport and bought a burger to hand-carry all the way back to Africa for his roommate (who actually ate it and survived).