OpenTable is a well-designed site offering ratings, reviews and reservations for 8,500 restaurants nationwide. Check out the detailed listings, which offer info such as parking info (private lot? valet?), dress code (jacket preferred?) and contact names for private parties. Then check the times of available reservations, and book your table online. The site also regularly updates lists of its most-booked restaurants; one recent search showed Otto Enoteca Pizzeria in Greenwich Village at the top of the NYC list.