Using the four "pillars" of Graph Search -- people, photos, places and interests -- we looked up terms like "My friends who like Star Wars and Star Trek, " "Restaurants in San Francisco that my friends like, " "Photos of hiking in national parks" and managed to get results every time.
With Graph Search you combine phrases (for example: "my friends in New York who like Jay-Z") to get that set of people, places, photos or other content that's been shared on Facebook.