Even though women make up 51 percent of the U.S. population, only about 4 percent of movies are directed by women. Of the 220 TV shows, representing about 3500 total episodes, only 14 percent were directed by women. Bloomberg interviewed several female directors in Hollywood, from Oscar winners to the director of "Twilight" to explore the various forms of sexism and discrimination they have faced in Hollywood, and what they are trying to do to change things