I believe that Janet Jackson would be a terrific actor to play the role of Rose Maxson. 

Rose Maxson is Troy's wife and mother of his second child, Cory. Rose is a forty-three year-old African American housewife who loves her family very much. Unlike Troy, Rose is a realist, not a romantic longing for the old days of yore. She has high hopes for her son, Cory and sides with him in his wish to play football. Rose also has a strong love and loyalty to her husband Troy and their marriage. She shows this by accepting Troy's illegitimate daughter, Raynell, as her own child. "Okay, Troy ... I'll take care of your baby for you ... cause like you say ... she's innocent ... and you can't visit the sins of the father upon the child. A motherless child has got a hard time. From right now ... this child got a Mother. But you are a womanless man." I chose Janet Jackson on the bases of her terrific performance in the movie Why Did I Get Married? Her performing as Patricia a strong but devoted wife having struggles in her marring, I believe proves that she would be able to portrayed Rose’s personality in all form.