This afternoon, not only can you take out a book on perfecting your tennis backhand, you can work on your Wii Tennis backhand at the New York Public Library's Humanities and Social Sciences Library (the big one on Fifth Avenue at 42nd Street in Manhattan). The grand Astor Hall will be filled with Wii, Xbox 360, and Playstation 3 stations for its Game On @ The Library! program today at 4:00 p.m.--nothing like a......