I wish I saw this thread before my trip to the SF Bay Area (arrived in SJC and departed OAK), just for the secret menu. However, I was told on another forum I frequent to give In-And-Out a try. I am happy I did. I am taking a trip to PHX soon, so a stop at an In-N-Out is on my itin. I have not been to Fatburger, as the closest locations to me are in North Jersey and Western PA.
[off topic]But if any of you have been to Char Hut in South Florida, there is a treat for you![/off topic]