A mainstay of penniless bohemians. Certain dishes may require a shot of liquid flavor -- a squirt of hot sauce is a good remedy -- but the big glass bowls of noodles topped with various meats and vegetables (try the bun ga xao) work well and are a nice staple, as are the goi cuon chay (vegetarian spring rolls). And, at two bucks a pop, you can't miss with the banh mi thit, a surprisingly tasty fried-chicken sandwich. At night, Mekong turns into the lounge Blue, and the restaurant's back room is the Jade Room. The Upstairs Lounge is, well, upstairs.