I'd like to have some new features:
1) Sharable wishlist - just give a link to my wishlist my husband who's not registered yet so he could pick up something he'd wish to see from what I've already chosen
2) When I finally convince him to join, it would be awesome to create a recommendation list for both of us, which would take into account previous ratings of us both.
At least, it would be cool if user1 could see a wishlist or rating made for user2 but ordered by proposed ratings for user1. I believe a lot of people watch movies with other people, so this would be a great help to choose something that all the company would like.