Guy Fieri hits three joints with the same name twice -- Pok Pok, Tap Tap and Niko Nikos. In Houston, an old gas station serving up authentic Greek specialties including moussaka, gyros and honey-drenched donut holes called loukoumades; In Miami Beach, Fla., a Haitian restaurant doing a classic marinated pork and a one-of-a kind watercress sauce -- all from scratch; and in Portland, Ore., a walk-up or dine-in place where they're making all kinds of Asian, from Thai marinated boar to Vietnamese chicken wings.

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.