You may think this is just another movie for the over 70's crowd to go see, but you would be wrong, and still technically right I guess. Yes, this stars Helen Mirren, and Ian McKellen, neither one can wear the Spring Chicken costume anymore, or ride the MIllenium Force probably. But this is really good. Indeed, they are the stars here, but the real star of this movie, is - the script. And today, that's…