Why Sasha Grey?
MAybe Soderberg should have SEEN her before casting her, rather than just reading about her. If he had, he would have known that SAsha Grey's acting is bad even by the porn industry's standards. She is a throwback to the 70s and 80s porn acting that is so wooden, it became a running joke about the industry. Not that today's porn acting is much better, but there are several actresses in pron that can at leas be somewhat believeable.
The bottom line is, if this movie was made by anyone else, it would never have seen the light of day. With good reason.