Watch Thinking XXX for Free: How to Stream the Movie Online at 123Movies. . For a book project, photographer Timothy Greenfield-Sanders took photographs of 30 stars of adult movies, each pair of photographs in the same pose, clothed and nude. This film records the photo shoots and includes interviews with the performers and commentary from eight writers (and John Waters). The actors and writers discuss economics, nudity and exhibitionism, careers, and private lives.