This is one of the classiest restaurants in Houston. Dim lighting and intimate booths make it a highly romantic spot, though at lunch it transforms into a no-nonsense business joint (two private dining rooms are perfect for work parties). Post Oak Grill attracts an older crowd, and regulars are greeted by name. The service is as impeccable as the food, which is American with a Mexican flair. We recommend the crab cake with chipotle rémoulade, the steak salad with tequila-lime vinaigrette and the mahimahi with mango-habanero sauce.