Mommie Dearest was...interesting...to say the least. Was it entertaining? Yes. Was it entertaining on purpose? Probably not.
I have read that Joan Crawford was a difficult woman and could do pretty mean things sometimes, but I do believe that the movie may have been dramatized a little too much. However, Ms. Faye Dunaway did give the audience what the script called for and she played her part. I understand that she now hates the film and believes it ruined her career--maybe it did, but I really don't think that was her fault. I have yet to read the book (and really don't care to), but in all honesty--the script simply sucked to me.
Would I watch this movie again? Not if I can help it. But if for whatever reason I suddenly felt in the mood to watch it, it would only be because I want to watch Ms. Dunaway's performance.
I must also add that the job done on Ms. Dunaway's appearance was quite spectacular!