Potbelly Sandwich Shop is awesome: Live guitarists, tasty shakes, and toasty sandwiches called things like "Wreck" (every type of meat imaginable) and "Hammy." They even make a darn zingy coleslaw. Service is typically great, too. Their newest area location is now open at 1 Porter Square, says their website. You'll also find a roster of their daily soups and music schedule.