One of the generation of film directors who crossed over from the world of music videos, F Gary Gray has proven himself to be among the most inventive, creative and commercially successful of the crop. His feature film directorial debut, "Friday" (1995), was made for $3 million and grossed 10 times that much, with audiences applauding the collection of vignettes in the life of Ice Cube in a day in South Central Los Angeles. But Gray really firmed his status as a filmmaker to be reckoned with the release of "Set It Off" (1996), which starred Queen Latifah and Jada Pinkett in the story of four