Beauty and the Beast
This was one of my absolute favourite stories as a child... when I saw the movie(I think in middle school french class...) I was absolutely appaled that they were allowed to steal the tittle of a story like that and change the plot details so much! :-(
But then, they are Disney and apparently, someone decreeded that it was allowed.
If someone can think of an original plot line by Disney themselves(no re-makes, no books-turned-movie, no sequels)... Then they will get a cookie. :-P