Pretty much every casino hotel in Reno has a 24-hour diner, and this one (inside the Little Nugget Hotel) serves pretty good coffee-shop fare, but that's not why it's always packed to the rafters. The crowds flock here for one reason: the burgers, which are the undisputed champs in town. Practically a Reno institution is the Awful-Awful -- a juicy $5.50 cheeseburger served with hot, crispy...