WHY Cheeseburgers and banana cream pie.

WHAT This no-frills diner with a long counter and even longer lines serves fantastic burgers, very good short-order breakfasts and house-made pies that are famous enough to draw folks from around Southern California. In fact, just about every food group on the wall-mounted menu has its passionate devotees, including the toast and the bacon. Thanks to its new truck, you can have pies ‘n burgers all over town.

WHO Caltech students and profs, older couples, paperback-toting singles.