I am a fan of Duncan Jones - his movie "Moon" is in my top 10 of all time, but I wasn't expecting much going into this Warcraft and I have to say, I was moderately entertained. The CGI was good and the battle scenes were believable enough.
A lot of the casting choices were poor though, I would even say: Most of the actors were miscast, but the fake ones kind of made up for it.
A mindless summer blockbuster with a much bigger potential...