This movie HAD something original
I've read the topics in this movie's board and the complaints are the usual, the ones in every rom-com board - predictability etc., which is of course absolutely true and even the point of romantic comedies in the first place.
What was to me a step forward from the average romcom though was this: the point, that nobody really had to change. In all the other movies of this type, the women get a full make-over, change personality and then the guy falls in love with them. The men stop being idiots (although IMO they rarely are, they just somehow always need to apologize in the end for something apparently stupid they apparently did) and become sweet and adorable and monogamous.
However, what pleasantly surprised me in The Ugly Truth, was that they didn't change the original motto or the actors. The ugly truth is still there in the conclusion of the story - the guys prefer to look at and have sex with women who they deem hot. Even though Abby looked more stuck-up before the make-over, he liked her from the beginning. He liked to see her in sexier outfits, but in the end, he did fall in love with the annoying character. Also, he didn't change. In the end, he was still with his mind full-on sex, he was still into hot women and he was still charming, just as he was in the beginning, only that Abby was so repulsed by his theory that she didn't want to see his positive sides.