Decent movie, HORRIBLE adaptation! As a movie in and of itself this is not too bad, in fact I might even have really liked it if I hadn't read the book. However, as an adaptation, this was a disaster. Like many other reviewers I get the feeling that they didn't even read the book! So many things are just way off, it's awful...
They took way too many "creative liberties" and it certainly didn't add anything of value, it just made it look like a poor attempt of being unique (if you want to make an adaptation, you should follow the original, otherwise you should make your own story).
Henry suddenly had a daughter (???) who would serve as the romantic interest and I get the impression that she was meant to "save" Dorian from his lifestyle or something. The painting was practically alive, it could move and make noise and seemed to be physically decaying - the first sign of corruption, if memory serves, was a maggot or something eating its way through the canvas. Why? Hell, I don't know. Basil's death was unnecessarily violent and he was chopped up into pieces and dumped in a river, presumably so that he could be found later in the movie and cause drama. These are just some examples of the weird things that were changed, because screw the original, right?
Most of the characters were really off, and some plot points were changed for no apparent reason, it served no purpose whatsoever and they should have been kept the way they were. They also did a lousy job at subtlety, either they didn't know how to do it or they thought the audience would be too stupid to pick up on it.
Again, as a movie on its own it's kind of alright, but it's quite frankly a disgrace when compared to the original. I had really high hopes for it too, I think they really could have done a much better job if only they had bothered reading the book.