Everything that you want to know, you can read in almost every comment.
But I will tell you, that I enjoyed those 70's actors with their great play.
Look at Billy-Jean, shining with her "super-cool" glasses, looking at the marvellous city views in the sunset lights, while going down in the skyscraper.
Can you just catch the moment and enjoy? try!
Review of Battle of the Sexes
