Lee Daniels Scores Historic Nomination

Precious director Lee Daniels made history yesterday, becoming the first African-American filmmaker to receive a Directors Guild of America nomination. My happiness for Daniels' deserved acknowledgment is tempered by a "what the..." thought that neither Spike Lee received a DGA bid for Malcolm X nor John Singleton for Boyz N the Hood. Are there other films from African-American directors passed over by the DGA?