'When I grow up, I wanna be ...' (quote)

The line from the movie: "When I grow up, I wanna be just like you" is the hight-point of this movie and a great achievement in screenwriting. Not because of the line itself, but because of the context it is used and because of who says it to whom. I'm not going to spoil it for you, but if you watch this movie, I hope you will be pleasantly surprised. I was.