Streep was fabulous, and so was Stanley Tucci as her husband. The parts of the movie devoted to Julia Child and her era were wonderful. The parts about Julie and her life were tedious. Watching these 30-something year-olds is not really palatable--boring, self-absorbed, selfish, whining, purposeless, and nowhere near up to the mark of the magnificent Child, who also suffered from "nothing to do" in her day but corrected that with incredible panache. Amy Adams portrayed the insipid Julie very well, but why make a movie about insipid people? Streep's Julia is why the movie got 4 stars from me, otherwise it's 2 stars. Dull writing, no plot to speak of; it all relies on Julia Child and there isn't enough of her.
Too much was left out, and stuff that wasn't in the book was put in for no reason, that didn't move the story along, didn't give us any insight into characters and feeling. Actually emotion and feeling were left out in favor of special effects. Don't spend the money. Wait for it on Netflix and re-read the book, you'll get far more out of it.