There's something about In-N-Out Burger that inspires a fervent following, even among the rarefied social circles celebs land in (could it have something to do with the burger chain's semi-surreptitious proselytizing?). What is it? All our theories are out to lunch. And they're taking lunch at In-N-Out Burger. Oh, now it becomes clear—the food is really freaking good. Take a moment out of your day to commune with two pillars of America: burgers and celebrities.