That Sarah Young scene where she drinks twenty blokes' jizz from a cup. That puts her right up there. Fans of this kind of thing should check out the American Bukkake series or its European equivalent, or the German series gigantische Besam....Besammlin...somethingorother.
I agree in part, but there's a role for pure filth. That's why I like Bukkake and the sodomania series. Provided it's genuinely consensual then no harm is done. Not that anal sex per se is particularly extreme - plenty of people do it with their girlfriends on Sunday nights.