Cattlemen's Steak House (Oklahoma City, OK), Sam LaGrassa's (Boston, MA), Nickel Diner (Los Angeles, CA)

Guy Fieri checks out some joints where things are still done the old-fashioned way. In Oklahoma City, a steak house that's been serving the same steaks, desserts and even salad dressing for more than 80 years; In Los Angeles, a 1940s diner brought back to life by a chef doing mac and cheese, fried catfish, and donuts ... her way; And in Boston, three brothers carry on 40-year-old family tradition - making clam chowder like Dad - and chipotle/pastrami sandwiches.