A survey of African-American sexuality in movies is long overdue, but this skimpy documentary fails to do justice to the subject. Dozens of accomplished black actors and directors reminisce about movies that inspired them and share tales from the front lines in Hollywood, and Karen Kramer, the widow of producer Stanley Kramer, recalls the problems her husband encountered while making Guess Who’s Coming to Dinner. The chapters on the casting process and the blaxploitation era are pointed, but director Darryl Pitts presents his material in scattershot fashion. The graphics are pedestrian, prominent actors’ names are misspelled, and there are glaring omissions (like any appraisal of Will Smith, one of the biggest box office draws in the world).