Night Moves... interesting new movie with Jesse Eisenberg as an eco-terrorist carrying out his biggest "project", I found it quite good, engrossing and dealing with a theme which I have seen surprisingly infrequently. I am not sure I liked the denouement, specifically Eisenberg's characters decision, but I thought overall tone was good and there was genuine suspense and solid performances. Moderately evenhanded, by the end of it you dislike all three of the protagonists and yet are still not persuaded either for or against their cause.
Sin City 2... other than the technological advances of the last 8 years resulting in better effects/CGI, this did nothing new on the first movie and of course lacked the originality of style which made that film stand out. Good entertainment value, but really not worth the $18 I paid to see it in 3D ultraAVX. No point in the "ghost of Bruce Willis" being there at all other than as an unnecessary sixth sense reference and a way to keep Bruce in the film. Chronology compared to the first film was all fucked. I also think the character development from some of the bit-characters from the first film, specifically Senator Rourke and most of all the black guy with the golden eye, wasnt great and took away from their effect, I LIKED them as cardboard characters for the action and real protagonists to move around. Eva Green was super, super hot and it is constantly entertaining, and I liked the small storyline with Levitt's new character. You should probably see it, great film to go and see with your mates one evening, but really does absolutely nothing new. I see this turning into a franchise with each movie having more and more money spent on it but declining further from the original because it just cant come up with the required originality.
EDIT: IF they do make another one I really think they would be better off focusing more on new storylines and characters rather than trying to squeeze more life out of the old ones. Make Marv, Dwight and Nancy into the side characters and centre the stories around new creations.