Chris Rock is being sued by another film maker who claims he stole the idea for "Good Hair" from her last year. The movies are similar: they each were inspired by the filmmakers' daughters, interview medical professionals, feature a comedian, and travel to India to investigate the hair black market.
She let Rock see a pre-screen and he yelled out, "We've got to go to India!" Then, he refused to sign a non-disclosure agreement. If I were her I wouldn't be surprised.
I'm bummed though. I was really excited to see this one.