Blackfinn American Saloon is a three-story restaurant located on Jefferson Avenue in downtown Naperville.  The first floor is where the bar is located; the dining room is on the second floor; and the rooftop patio and private party room are on the third floor.  Blackfinn is best known for its burgers, made of 8 oz. of Black Angus beef, but they also serve a variety of sandwiches, steaks, salads, and daily specials.  Thursday is VIP night, with live entertainment.  On Fridays and Saturdays, Blackfinn has a DJ.  Beginning at 9pm on these nights, Blackfinn does enforce a more strict dress code and checks IDs before admittance.