FILM: Andrew Fleming's 1999 comedy Dick is screening tonight as part of the Fido-sponsored Free Flicks series at the Harbourfront Centre. In case you don't know, the movie is about two teenage girls (played effortlessly by Kirsten Dunst and Michelle Williams) hired as the official dog-walkers of President Richard Nixon, in an attempt to conceal their knowledge of the Watergate scandal. Except, funny! Sirius Stage at the Harbourfront Centre (235 Queens Quay West), 9 p.m.,......