Saw this recently on a great channel that shows old movies in the UK. It's very much a period piece of it's time, I was surprised to see it was set in the late 60s as to me it has much more of a seventies feel.
I didn't really warm to any of the characters, none of them are particularly likeable or sympathetic. Interesting that it received an X rating, I suspect now it would probably be rated as a 15. I was also surprised to see that it received a best supporting actress oscar, the actress concerned isn't particularly noteworthy in this part, must've had light competition that year.
