I just saw this film at Sundance, and it was truly amazing. I confess I did not read the book (I will now), but I suspect that Daniels really took it to the next level. The story of Precious and her world was deeply moving and supremely well acted. I was particularly surprised at my own ability to laugh, along with the story, at the worst humanity can throw at us. After the film, Daniels, the producers, and the entire cast came forward to many standing ovations. Gabby was indeed charming, and I was particularly riveted by Mo'Nique's discussion of how she was able to become Mary, Precious' mother. Daniels fielded many questions from the audience, mostly directed at the task of realizing this story. I hope to see his work again. This is a heavy film, but I highly recommend it.
