This review is written with those in mind that actually CARE about the content of the original Alice in Wonderland/Through the Looking Glass books. Lewis Carroll wrote alot more than Alice and her adventures, but it is still what he for the most part is remember for.
Through the Looking Glass has a poem which is part of something Carroll did exceptionally well, called nonsense verse. This Poem is called Jabberwocky and is basically a very simple tale about a boy who becomes a knight when he slays a very mysterious-looking creature called the Jabberwock.
This entire movie is based on a story Tim Burton has made out of this poem, which although very fun to read, is not a very eventful poem at all. This leaves the movie SEVERLY lacking in the story-department and also takes alot of the fun I used to have with reading this poem out of. The poem mentions two words, "Bandersnatch" and "Jub-jub Bird". Up until this movie was released, I did not know nor did I WISH to know what a Bandersnatch looks like. Now I know, because Tim Burton has made one - in full, mind-blowing 3d! Very little is explained exactly how the Bandersnatch came to be and why it is working for the Red Queen. It just finds itself in the movie never the less. Like I said, these kinds of things happens all the time throughout the movie and it seems to me that Burton just assumes that we are going to understand it somehow. He never bothered with a real explanation.
Also, for some reason, Alice seems to be almost the sidekick here while the Mad Hatter sails up as the protagonist. The reason for this is probably because the Mad Hatter is portrayed by Johnny Depp. If he had chosen a lesser name, maybe the story wouldn't have suffered as much. As the story progresses, it becomes very clear that Tim is not at all certain of what he is trying to do or what his aim is with this "remake" of Alice's adventures. In the end, it turns out as a completely unneccesary movie and something that robs the original books of its profound deeper sense of humour and wit instead of adding. On the other hand, it also makes you prefer the book to the movie - which in turn makes the books that much better. But I would always prefer that book to any movie. It cannot be remade on the screen.
All in all, I think this was a horrible attempt at Alice's adventures and although the acting is horrible, the 3d looks like plastic and the story is about as thorough as an episode of "Days of our lives", I did enjoy the Caterpillar simply because he is voiced by Alan Rickman. I dont think children will care about this sort of thing at all, but for grownups who is interested in the aftermath of an old classic - I advise you to stay away!