Moulin Rouge is one of my favorite movies... I also consider this film to be very creative.... the music, the plot, the costuming and make-up are all genius and very original... Of course many of the songs in this movie are taken from other songs....but the way in which these songs are used/remade to retell a story in itself is very creative... the movie gives new meaning to the songs which I found to be very unique. 

copy and paste this link to see a clip of this film.... I believe the song Nicole Kidman is singing was originally Madonna's... 

http://www.youtube.com/watch?v=wgA3oKiCzsk