READERS' PICK: There is dancing in the streets at the Fourth Avenue Street Fair, come rain or come shine. And with two events a year it only makes the fair twice as nice. Whether you have wheels or your daddy took your T-Bird away is of no importance; the six-block area is closed to traffic so that handcrafts, art and live music with room to dance is the rule of the day. And if you're a stranger, this ain't a bad place to people-watch, either. The women may seem wicked if you're unwanted but the food and a stint on a mechanical bull might take the edge off.