I, as I'm sure many of you, heartily admire Meryl Streep's work and are familiar with her "becoming the character" to an amazing degree. If this is what you see the movie for, you will not be disappointed.
Her performance can take your breath away. The fifth star is for Streep playing Thatcher as a forgetful but exquisitely complex old woman.
But there is much more to this movie. I am thoroughly against Mrs.Thatcher's politics, but I greatly loved "The Iron Lady." Her character, her speeches through decades of great change in Britain and the world, and her family and home life are all here and powerfully charged. Charged with so many emotions, but never sentimental.