I first read Sapphire's novel Push around the time it was published (1996?) when I lived in NYC. That book was a big deal back then. At the time, Sapphire was primarily known as a poet and performance artist but the book garnered a lot of well-deserved attention. I was lucky enough to see her read and perform her poetry a few times.
So I'm thrilled that this book has been made into a movie, produced by Oprah Winfrey and Tyler Perry (thank you for giving us something more than Medea, Mr. Perry!). Check out the trailer for Precious, and note the impressive cameos by Mo'Nique, Mariah Carey, and Lenny Kravitz.
Also, here's an article from Time magazine on the movie.
[Side note: I wrote a review of Push for the Associated Press long ago--I'll have to dig it out of my archives and post if I can find it.]