There are burgers. And then there is the "Cadillac of fast food burgers." (Quote: Mike Cahill of Michigan) There has been much talk lately among So Cal bloggers about the best burgers to be found, since Chowhound published the Burger Hunt Map (Google map). Chowhound's focus is on non-chain burgers. Still, if I had the choice, I'd go to In-N-Out for a double-double. The fast food chain has been praised by many (including Eric Schlosser in Fast Food Nation). The only thing that's secret about it now (and even that's out of the bag) is the secret menu or the double-secret menu. If only they delivered!
I'd also add that I was once a big fan of the Big Wave with Cheese and the natural fries at Islands.