Third Battleship trailer sells scale and non-stop explosions, but leaves me bored.

I made a comment the other day on a radio podcast I guested on, basically stating that there are at least a few 'big summer movies' ...

She can sing, but can she act? Why exactly is Rihanna starring in Battleship instead of any number of actual black actresses?

I am not the first person to bring this up.  Heck, Samuel L. Jackson went on a mini-tirade about this a decade ago , regards to male actors....