Batman V Superman reactions (spoilers)

Well, some early screenings have happened, and reviews are starting to come in:

https://www.reddit.com/r/dawnofjustice/

http://www.imdb.com/title/tt2975590/

http://www.rottentomatoes.com/m/batman_v_superman_dawn_of_justice/

If you have seen it, what did you think? Or if you are planning to see it this weekend, what are you expecting going in? It might be interesting to compare thoughts before and after.