Well worth going. Johnny Depp, as always, is wonderful! Mia Wasikowska, as expected, is beautiful. Helena Bonham Carter is once again deformed by her partner, Tim Burton, but it's amazing how it was so seamless and consistent throughout the entire show. There were no scenes where suddenly her head didn't look so big for her tiny body.
My only casting "complaint" (if you want to call it that) is that Anne Hathaway's fake white hair looked disturbing with her large, dark eyebrows. I found it hard to look at her, and considering she was "the beautiful" witch, it just seemed wrong to me. She is beautiful, but not in this movie.
You just have to see it for yourself to fully appreciate. I can tell you that it feels like you're inside the movie, the graphics are fabulous, etc. All that is true, but until you see for yourself, you're truly missing out!