Gift certificate for a two-hour party for you and your friends.  Duffy's  Billing itself as an upscale sports bar, Duffy's take sports and dining seriously, almost to the point of excess: the restaurant's 40 TV sets and three large screens are tuned to sports events and the menu includes New York strip steak and a 20-ounce pork chop. Duffy's is also the official home of University of Michigan alumni.