In defence of this comment, apparently the book describes the drugging and raping of two ten year olds from the record shop, which is changed in the film to be a consensual encounter with girls his own age.
There are other rape scenes in the movie though. Fun fact: one of the actresses involved quit because of the difficulty of filming them.
One other movie with a rape scene: American History X.
I was referring to the film version of A Clockwork Orange, which does have a rape scene, but not of the two teenagers from the record shop. The book is another matter though (not that I can remember it clearly, haven't read it for at least 2 decades..).
EDIT: Actually, this is cleared up above, which is fortunate since I appeared to be asleep at the wheel when I wrote my original response ;)