Went to Thip Khao (on Christmas Eve, with Jewish friends) -- very impressed. There's both a slightly-Americanized menu, with dishes like papaya salad (extremely spicy!), the aforementioned pork sausage (very tasty), laab, fish and noodle dishes, etc., and also a "Jungle" menu (srsly?) with offal such as beef tongue (fantastic!), intestine, fish heads, and something called "pork blood tofu".
Someone organize a DR outing to this place. I want to go with some chileheads who know what they're ordering...