The sisters+brother-in-law and I saw Coraline last Saturday. I liked it a lot! (Then again, it's Gaiman, and Gaiman does No Wrong in my eyes) but here are some more in depth thoughts about it.
I'll start saying that I've not read the book, so I have no idea if the adaptation was okay or not. What I can say is about the movie.
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Cut for spoilers. )