Pancho's will keep serving you dinner until you say "No mas!" Pancho's Mexican Buffet operates more than 20 family dining Mexican restaurants that offer an all-you-care-to-eat cafeteria-style buffet. The menu also includes individual entrees and the restaurants offer table service to patrons after they have gone through the service line. (Just raise the small Mexican flag at the table for refills.) The chain's buffet features more than 30 freshly prepared items, including tamales, enchiladas, tacos, and chalupas. Its units are located primarily in Texas. Founded in 1966, Pancho's is owned by chairman Stephen Oyster, a former Jack in the Box executive.