I was hesitant to watch this film. A friend had rented it and ask me to watch it.
The acting here is good by most everyone. It is also interesting how you get to see 'behind the scenes' of a person who is a mega-star. You get a little peek into the private life that you might not see otherwise.
At times the film feels lurid and soapy. But other times it is fascinating. Kevin Costner did a very good job here and looks so handsome. He really gave his character life here. Whitney Houston also does a good job and it wasn't any stretch at all to believe her portrayal of the big star singer.
Probably a film that women would enjoy more than men but despite the flaws, I did enjoy it. I don't think it ever became too sappy. I think the reason for the attacks on the star are probably the weakest point of the film.